Cervical cancer

Introduction

Definition of Cervical Cancer

Cancer that forms in tissues of the cervix. The cervix is the organ connecting the uterus and the vagina. It is usually a slow-growing cancer that may not have symptoms but can be found with regular Pap tests. This is a procedure in which cells are scraped from the cervix and looked at under a microscope. Cervical cancer is almost always caused by a human papillomavirus (HPV) infection.

The anatomy of the female reproductive system. The organs in the female reproductive system include the uterus (corpus and cervix), ovaries, fallopian tubes, and vagina. The uterus has a muscular outer layer called the myometrium and an inner lining called the endometrium.

 

Important note regarding other types of cancer of the uterus

Other types of cancer might develop in the corpus of the uterus. Most of these cancers are endometrial cancers. Diagnosis and treatment of these types of cancer are different from cervical cancer. More information on endometrial cancer is available here.

This guide is dedicated to cervical cancer only.

 

GUIDE FOR PATIENTS BASED ON ESMO CLINICAL PRACTICE GUIDELINES
This guide for patients has been prepared by the Anticancer Fund as a service to patients, to help patients and their relatives better understand the nature of cervical cancer and appreciate the best treatment choices available according to the subtype of cervical cancer. We recommend that patients ask their doctors about the tests or types of treatments needed for their type and stage of disease. The medical information described in this document is based on the clinical practice guidelines of the European Society for Medical Oncology (ESMO) for the management of cervical cancer. This guide for patients has been produced in collaboration with ESMO and is disseminated with the permission of ESMO. It has been written by a medical doctor and reviewed by two oncologists from ESMO including the lead author of the clinical practice guidelines for professionals. It has also been reviewed by patient representatives from ESMO’s Cancer Patient Working Group.

Frequency

Is cervical cancer frequent?

Cervical cancer is the third most frequent cancer in women. In Europe, 10.6 women in 100,000 were diagnosed with cervical cancer in 2008. This is about 4% of all cancers diagnosed in women. Nearly 1% of all women develop cervical cancer over their lifetime in Europe. Given the fact that a vaccine protecting against the most frequent types of human papilloma virus (HPV) involved in cervical cancer is now available, cervical cancer will likely become less frequent in the future.
The risk for cervical cancer is higher in Eastern Europe (especially in Serbia, Romania, Bulgaria and Lithuania) because of the lack of organised population-based screening programmes. Unfortunately, the situation is much bleaker in developing countries, where 85% of new cases occur. Because of the frequent inaccessibility of screening and treatments the mortality rate is 10 times higher in developing countries than in developed countries. Moreover, presently, the cost of the prevention vaccination is such that it will likely remain unavailable for most women in many parts of the world.

Causes

What causes cervical cancer?

It has become clear that essentially all cervical cancers are caused by certain types of the human papilloma virus (HPV), a group of viruses akin to the virus that causes skin or genital warts. Infection with HPV is caused by direct contact and in the case of the cervix is usually aroused by sexual contact or even by skin-to-skin contact. HPV is very frequent in the general population. Almost all adult women have at some time contracted HPV, but in the overwhelming majority of cases HPV infection resolves within six months to two years without causing any signs of disease. However, in rare cases where HPV infection does not resolve, where the infection is persistent, the risk of developing pre-cancerous cervical lesions, which precedes the development of cervical cancer, is higher. A persistent infection with the so-called high-risk (carcinogenic, cancer causing) HPV types, notably HPV types 16 and 18, which are the most common types found in cervical cancer cases worldwide, is necessary for cancer to develop. However, this is not sufficient as the development of cervical pre-cancerous lesions and cervical cancer takes several years (decades) to occur. Namely, other factors are also needed for cervical cancer to arise. Those factors are related either to a risk of being infected with HPV or to a risk of developing cervical cancer once HPV infection is established:

  • Unprotected sexual intercourse with multiple partners or sexual intercourse with a man who has multiple sex partners.
  • Onset of sexual intercourse activity at an early age.
  • Long-term use of hormonal contraceptives.
  • Multiple pregnancies.
  • Poor hygiene.
  • Other sexually transmitted genital infections, e.g. Chlamydia trachomatis and herpes simplex virus-2.
  • Risk factors for developing cervical cancer once HPV infection is present

Decreased immunological defences such as the immunodeficiency caused by Human Immunodeficiency Virus (HIV) infection or drug treatments that affect the immune system, because the immune system normally clears HPV infections, reducing the risk of cancer development.

  • Other factors that weaken the immune system and general health like tobacco smoking, poor diet (e.g. low intake of fruit and vegetables), irregular sleeping patterns and lack of exercise.

Note that there are risk co-factors that may not have a risk-promoting effect by themselves, but are just associated with real risk factors. For example, hormonal contraception is more frequent in women with an early onset of sexual activity, while poverty and living in a developing country is a definite risk factor for not having regular gynaecological check-ups and screenings because of more difficult access to health services.

Early detection of cervical cancer can easily be made by an examination of swaps or smears from the cervix surface, obtained during a gynaecological examination. When detected early, treatment of cervical cancer is simple and effective. Therefore, the main risk factor for life threatening cervical cancer is failing to have regular gynaecological examinations and Pap smears.

 

Diagnosis

How is cervical cancer diagnosed?

Cervical cancer must be suspected in the following circumstances:

  • Abnormalities upon gynaecological examination.
  • Severe abnormalities in cervical smears.
  • Bleeding outside of menstruation periods.
  • Bleeding after sexual intercourse.

The diagnosis of cervical cancer is based on the following examinations.

  1. Clinical examination

The clinical examination is the inspection and palpation by the doctor. This includes gynaecological examination by bimanual rectal vaginal examination to assess the location and volume of the tumor and whether it has extended to other organs in the pelvis (pelvic exam). The doctor directly visualises the cervix after inserting a speculum into the vagina. In healthy women without apparent disease, the doctor takes a smear of the surface of the cervix to be examined under the microscope (cytological examination). If examination is difficult or there is uncertainty about the extent of the tumor, this examination can be done under anesthesia.

  1. The Pap smear test [1]

Pre-cancerous cervical lesions may be present for many years without causing any symptoms. Its slow growth provides a long window of opportunity for early detection and easy cure. The cervix is palpable and visible upon gynaecological inspection so that the doctor can easily obtain smears from its surface for a cytological examination of the cells that are shed from the surface of the cervix, the so-called Pap smear or Pap test.

The cells in the smear are examined in the laboratory, allowing an early diagnosis of a pre-cancerous lesion, i.e. an abnormality of the cells of the cervical surface called dysplasia which over the years might develop into a cancer. Also incipient cancer at this site is easily detected by smears before it becomes dangerous (malignant).

Upon laboratory examination, the cells in the smear may:

  • be normal.
  • reveal mild dysplasia which is usually due to an infection caused by HPV. Other terms used to describe mild dysplasia are low-grade squamous intra-epithelial lesion (LSIL) and Cervical Intraepithelial Neoplasia of grade 1 (CIN 1). Mild dysplasia usually regresses spontaneously but can progress to a more severe stage of dysplasia.
  • reveal moderate or severe dysplasia. Other terms used to describe moderate or severe dysplasia are high-grade squamous intra-epithelial lesion (HSIL) and Cervical Intraepithelial Neoplasia of grade 2 or 3 (CIN 2/3). Such lesions could progress to cervical cancer if left untreated.
  • reveal a cancer of the cervix.

Having a vaginal infection can prevent the correct examination of the cells from a smear. A new smear is then performed after the infection has been cured by appropriate treatment.

In addition to cytology, notably in case of undetermined cytological diagnosis, the presence and the type of HPV can be verified in the laboratory, which provides information about the risk of having abnormalities associated with the HPV infection. The results of the HPV test do not have any effect on further treatment plans.

Cervico-vaginal smears should be performed every 3 to 5 years in women 25 to 65 years of age, thus not giving a potential cancer time enough to grow to a dangerous size. Screening programmes assure that if an abnormality is detected, the woman is called back for a control smear and eventual further diagnostic investigation.

A suspicious smear is an indication that a biopsy is necessary, i.e. the resection of a tissue sample containing all layers of the cervix and allowing visualisation not only of the cells, as in a smear, but of the structure of the tissue.

  1. Colposcopy

In case of severe abnormalities or doubts about the results of the Pap smear, colposcopy should be performed during the clinical examination. Colposcopy is a procedure in which the patient lays on the exam table as during the pelvic exam. A speculum is placed in the vagina to help the doctor visualize the cervix. The doctor will use a colposcope to examine the cervix. A colposcope is an instrument that has magnifying lenses similar to binoculars. From outside the body it allows the doctor to see the cervix closely and clearly. The doctor applies a weak solution of acetic acid (like vinegar) to the cervix to make any abnormal areas easier to see. When an abnormal area is seen on the cervix, a biopsy is performed.

  1. Histopathological examination

This is usually performed after a suspicious Pap smear and during colposcopy in order to confirm the results of the Pap smear. It is the laboratory examination of the tumor tissue after removing a sample from the tumor (biopsy). This laboratory examination is performed by a pathologist who will confirm the diagnosis of cervical cancer and give more information on the characteristics of the pre-cancerous lesions (CIN 1 to 3) and cancer. The biopsy is obtained manually by the doctor with a special device introduced into the vagina during colposcopy.

  1. Routine laboratory examination of blood and urine

Blood and urine samples are taken for laboratory analysis to verify general health and diagnose possible undiagnosed problems such as anemia, liver or kidney malfunction, urinary infection, etc.

  1. Medical imaging examinations

Medical imaging examinations are used to verify the extension of the tumor and exclude or detect eventual metastases. CT-scan and magnetic resonance imaging (MRI) are used to visualize any spread of the tumor to the pelvis and in the lymph nodes (located along the main vessels in the pelvis and along the aorta), which drain the tumor and can be sites of metastases. MRI has been shown to be superior to the CT-scan for this purpose. Basic complementary examination includes chest X-ray. To examine the urinary system (including the ureter ducts between the kidneys and the bladder, which can be compressed by an expanding cervical cancer or lymph nodes) an intravenous pyelogram is performed (an X-ray visualisation of the urinary system after intravenous injection of a contrast fluid). An intravenous pyelogram can be performed only after verification of the kidney function by blood testing because in case of kidney malfunction, special precautions (procedures and medication the doctor will prescribe) must be taken with the intravenous contrast injection to avoid kidney damage.



[1] In some developing countries where Pap smears are not available, direct visual inspection with acetic acid , may offer a reasonable alternative screening approach.
 

 

Treatment

What is it important to know to get the optimal treatment?

Doctors will need to consider many aspects of both the patient and the cancer in order to decide on the best treatment.

Relevant information about the patient

  • Age and reproductive status, i.e. whether the patient has fulfilled her wish to give birth or not. In most cases of -early-stage cervical cancer, the uterus can be preserved, albeit sometimes accepting a minimal risk, thus still allowing pregnancy. If the patient does not want to have children, preserving fertility is not a consideration in the choice of treatment, and the simplest and most effective treatment can be chosen.
  • General health and suitability for surgery: age, history of eventual other disease conditions such as diabetes, heart diseases or respiratory problems that have to be taken into account in the choice of treatment.

Relevant information about the cancer

The stage is the degree of spread of the disease in the body. Doctors use staging to assess the risks and prognosis associated with the extent of the cancer and specific characteristics of the patient and of the cancer in order to determine which will be the appropriate treatment. The less advanced the stage, the better the prognosis, and therefore the less aggressive the appropriate treatment will be. Staging is performed twice: first before any treatment, by clinical and medical imaging examinations; so as to determine the best treatment, and a second time, if the treatment included surgery on the surgically removed tissues to verify the adequacy of the treatment. The histopathologic laboratory examination of the removed tissues will allow for verification of the first (pre-surgical) staging and sometimes refining it. Indeed, the post-surgical findings may reveal evidence which makes further treatment advisable.

The table below presenting the different stages of cervical cancer is based on consensus in the Fédération Internationale de Gynécologie et Obstérique (FIGO). Some definitions are rather technical, so it is recommended to ask doctors for more explanations. Staging is complete and conclusive only after all clinical, medical imaging results are available for comprehensive assessment.

The pre-cancerous disease (stage 0), each major cancer stage (I to IV), and the subdivisions of these stages are shown in the table below.

Stage

Definition

Stage 0

This is the stage of pre-cancerous disease, i.e. small lesions confined to the superficial layer (epithelium) of the cervix (which resembles the skin). Such lesions are also called Carcinoma in situ or Cervical Intraepithelial Neoplasia (CIN). CIN grades 1 to 3 are distinguished according to whether the lesion is confined to the basal layer of the cervical surface epithelium (CIN1), reaches into the middle layer (CIN2) or extends to its upper layer (CIN3).

Stage I

The first stage of invasive cancer, even when it is not yet macroscopically visible but proven upon microscopic laboratory examination of biopsies to have in depth grown into the stroma, i.e. the tissue under the superficial layer of the cervix. In width, the lesion does not extend beyond the cervix proper, i.e. it does not involve the vagina or parametria. Depending on the dimensions of the lesion and its macroscopical visibility (i.e. visibility upon inspection with the naked eye), one distinguishes several sub-stages.

Stage IA

Microscopically invasive cancer which is not macroscopically visible and has grown less than 5 mm into the stroma and spread less than 7 mm in width.

Stage IA1

Stromal invasion less than 3 mm in depth and lateral spread less than 7 mm.

Stage IA2

Stromal invasion between 3 and 5 mm in depth and lateral spread less than 7 mm.

Stage IB

Macroscopically visible cancer or microscopically invasive cancer greater than stage IA2

Stage IB1

Lesion of less than 4 cm in greatest diameter.

Stage IB2

Lesion of more than 4 cm in greatest diameter.

Stage II

Cancer extending into the tissues beyond the uterus, but not as far as the pelvic bones or the lower third of the vagina.

Stage IIA

 

Macroscopically visible (visible to the naked eye) cancer extending beyond the cervix, without extension into the parametria

Stage IIA1

the macroscopically visible lesion being less than 4 cm in the largest diameter

Stage IIA2

the macroscopically visible lesion being more than 4 cm in the largest diameter

Stage IIB

 

Macroscopically visible cancer with extension into the parametria.

 

Stage III

Cancer extending to the pelvic wall, bones and/or to the lower third of the vagina and/or compressing one or both ureters

Stage IIIA

No extension into the pelvic sidewall, but involvement of the lower third of the vagina.

Stage IIIB

Cancer extending to the pelvic wall and/or compressing one or both ureters.

Stage IV

Advanced and metastatic cancer.

Stage IVA

Invading adjacent pelvic organs (bladder, rectum) and/or extending beyond the true pelvis, i.e. into the abdomen or the groin.

Stage IVB

With distant metastases, e.g. to the lungs or liver.

 

 

 

  • Laboratory examination of the biopsy and, if surgery has been performed, of the surgically removed material.

Tissue samples obtained by the initial diagnostic biopsy will be examined in the histopathology laboratory. When treatment consists of surgery (as for early stages of the disease, and whichever surgical specimen was removed: cervical cone, uterus or resected or biopsied lymph nodes) there is a second, post-surgical histopathological examination involving the examination of the removed material. This verifies the type of the cancer and allows verifying and refining the first staging of the disease, to know how advanced it could be. This additional information is necessary in order to decide which, if any, further treatment is needed. Results of the examination of the biopsy should include:

  • Histological types of cervical cancer:
    • Squamous cell (also called epidermoid, malpighian or spindle-cell) cancer, which is the most frequent (80-90% of all cervical cancer patients), arising from the outer part of the cervix, and
    • Adenocarcinoma (10-15% of all cervical cancer patients), the type arising from the glandular tissue of the inner cervical canal (endocervix). Its prognosis is worse than the previous type.
    • There are more rare histological types (e.g. neuroendocrine and clear-cell carcinoma).
  • Grade of cancer is the degree of abnormality of the tumor cells and tissue under a microscopic examination, it also reflects the estimation of its rate of growth and aggressiveness. Cancers can range between well differentiated, meaning that they resemble the tissue of origin well, and undifferentiated, meaning that they have lost resemblance with the tissue they originate from. Usually, well-differentiated tumors have a better prognosis than undifferentiated tumors.
  • If the tumor has been removed, the following examinations should be performed:
    • Margins: the outer margins of the surgically resected tumor sample are examined for presence of tumor cells. If any are present, further treatment is needed because it is assumed the tumor was not completely resected.
    • Lympho-vascular invasion: the lymph and blood vessels are examined for the presence of tumor cells. This is because the primary mode of dissemination of cervical cancer is through the lymphatic vessels, which drain the cervix and lead to lymph nodes. The microscopic detection of tumor cells in lymph vessels denotes a risk for spread beyond the surgical resection specimen and is an indication of the need for further treatment with chemotherapy and radiotherapy.
    • Presence of tumor cells in the lymph nodes: In this case, a complete removal of all lymph nodes within the pelvis can be recommended (pelvic lymphadenectomy) in addition to the surgical intervention on the cervix (or on the whole uterus). This is especially the case when there is lympho-vascular invasion, which suggests that cancer cells might have spread to the lymph nodes. Lymph nodes within the pelvis will be removed by surgery to check whether this is true or not.
    • Extension to the parametria: if the parametria on either side of the uterus are found to contain a tumor, this raises the stage of the tumor to stage IIB and is an indication of the need for further treatment with chemotherapy and radiotherapy because there is a greater risk that some cancer cells have disseminated in the lymphatic vessels and nodes.


What are the treatment options?

Planning of the treatment involves an inter-disciplinary team of medical professionals with different areas of specialization. This usually implies a meeting of different specialists, called multidisciplinary opinion meeting or tumor board review. In this meeting, the planning of treatment will be discussed using the relevant information from clinical, medical imaging and laboratory examinations and following the international guidelines and evidence-based medical precepts.

The type and extent of the treatment will depend on the stage of the cervical cancer, on the characteristics of the tumor and on the risks involved.

At the earliest stages, only local surgical treatment will suffice for cure. At more advanced stages the treatment will usually combine chemo- and radiotherapy.

Treatments listed below have their benefits, their risks and their contraindications. It is recommended to ask your oncologist about the expected benefits and risks of every treatment in order to be informed of the consequences of the treatment. For some cases, several treatment possibilities are available and the choice should be discussed according to the balance between benefits and risks in each individual patient.

Stage 0 and stage IA1

Stage 0 denotes a pre-cancerous lesion, i.e. small lesions confined to the superficial layer (epithelium) of the cervix. Such lesions include Carcinoma in situ and Cervical Intraepithelial Neoplasia (CIN1, CIN2 and CIN3).

Stage IA1 denotes an invasive cancer which can only be seen with a microscope but not with the naked eye. It measures no more than 3 mm in depth and 7 mm in width.

Conization

The standard treatment is surgical and is called conization. Nevertheless a pre-cancerous lesion CIN of grade 1 (or Low-grade Squamous Intraepithelial Lesion or LSIL) has high probability of regression without treatment. It can only require close follow-up for approximately one year more or less. Thus, only CIN grade 2 and 3 lesions (or High-grade Squamous Intraepithelial Lesion or HSIL) are treated by conization.

In a conization a cone-shaped piece of tissue of the cervix around the uterine orifice that connects to the vagina and in depth including the inner cervical canal is removed. This is done by ‘cold’ knife, by laser, or with a loop electrosurgical excision procedure. If upon histopathological examination of the resected conical specimen no invasion is found and the margins at the periphery of the specimen are microscopically free of tumor cells, the treatment was curative, and no further treatment is required.

An alternative to conization is the removal of the uterus which is called simple hysterectomy. This can be proposed to women who no longer wish to be pregnant. Any risk of later suffering from cancer of the womb is thus eliminated.

For a limited number of cases, removal of the lymph nodes within the pelvis can be recommended in addition to the surgical intervention on the cervix (or on the whole uterus). This is the case when during the histopathological examination of the initial biopsy, cancer cells are found in the lymph vessels and blood vessels around the tumor. This is called lympho-vascular invasion and suggests that cancer cells might have spread to the lymph nodes. It raises the suspicion that the tumor may be at a stage higher than stage IA1. In this case, lymph nodes within the pelvis will be removed by surgery to check whether this is true or not.

Immediate complications such as excessive bleeding are rare and not severe. However, if the treatment is performed during pregnancy, excessive bleeding is more common, and there is an estimated two-fold increased risk of pregnancy complications later on, such as premature labour. Often treatment of stage 0 is deferred until after pregnancy.

Long-term complications of conization are very rare. They may include cervical incompetence, resulting in increased risk of premature labour.

Note that conization is also used as a so-called “excision biopsy”, i.e. a diagnostic procedure in which not a fragment of the suspect lesion is taken, but the lesion is sufficiently small and accessible to be resected entirely. Depending on the stage found upon histopathological examination of the conization specimen, diagnostic conization may be curative, with no further treatment required.

Adjuvant treatment when there is a risk of recurrence

An adjuvant treatment is a treatment given in addition to an initial treatment when there is a suspicion that this initial treatment may not have been curative. Its intent is curing the cancer by reducing the risk of recurrence.

In the case of preoperative stage IA1 cervical cancer, if the histopathological examination of the resection specimen confirms the stage IA1, the tumor is cured, and no adjuvant treatment is necessary. However, the histopathological examination of the resection specimen may in some cases show that the tumor has spread more widely than expected, i.e. is of a higher stage than IA1. This will certainly be the case if the resection specimen shows invasion deeper than 3 mm and if the resection margins of a conization specimen shows the presence of tumor tissue. A higher stage must also be suspected if there is tumor in the lymphovascular spaces. Adjuvant treatment will then be indicated.

To summarize, the adjuvant treatment is recommended if two out of three risk factors are present: a larger-than-expected primary tumor, deep stromal invasion and lymphovascular invasion. Adjuvant treatment will also be indicated if lymphovascular invasion in the initial biopsy has led to a hysterectomy with removal of the pelvic lymph nodes and after the operation is found they contain tumor and/or tumor was found in the parametria.

The adjuvant treatment will be concomitant chemoradiotherapy, i.e. external radiotherapy and chemotherapy given concomitantly. In external radiotherapy, radiation is produced by an external source and directed to the pelvic area where the tumor was along with lymph vessels and lymph nodes. The chemotherapy consists of drugs that are able to kill the cancer cells all over the body, but with the intent, in this case, to kill cancer cells possibly present in lymph vessels and lymph nodes in the pelvis and also to potentiate the action of radiation. For concomitant chemoradiotherapy of cervical cancer the most commonly used regimen is cisplatin 40 mg/m2 of body surface once a week during the radiotherapy. It is accompanied by abundant intravenous fluid administration to prevent kidney damage.

Stage IA2

Stage IA2 denotes an invasive cancer which can only be seen with a microscope but not with the naked eye, and which measures between 3 and 5 mm in depth and less than 7 mm in width.

Surgery

The standard treatment is surgical. It includes a surgical intervention on the uterus and the removal of lymph nodes within the pelvis.

  • Young patients with a wish of pregnancy can have uterus-preserving surgery. A large cone of the cervix can be removed by conization or the whole cervix can be removed (a procedure called trachelectomy).
  • Other patients could undergo a simple removal of the uterus which is called simple hysterectomy or a resection of the parametria, the ovaries and the upper part of the vagina in addition to the uterus, which is called radical hysterectomy.

Adjuvant treatment

The results of the histopathological examination of the tissue removed by surgery (tumor, uterus and lymph nodes) will give the information necessary to decide whether an adjuvant treatment is needed. As also detailed in the section of stage IA1, an adjuvant treatment is a treatment given in addition to surgery when it is suspected that not all cancer tissue has been removed, or if the cancer extends to adjacent tissues, such as the parametria or lymph nodes, with the intent of curing the cancer.

Like in stage IA1, when cancer cells are found in the pelvic lymph nodes that were removed by surgery, or when margins at the periphery of the tissue of the cervix that has been removed are not microscopically free of tumor cells (positive margins), an adjuvant treatment is recommended.

In these situations, external radiotherapy and chemotherapy will be given concomitantly. In external radiotherapy, radiation is produced by an external source and directed to the pelvic area where the tumor was and also lymph vessels and lymph nodes. The chemotherapy consists of drugs that are able to kill the cancer cells all over the body, but with the intent, in this case, to kill cancer cells possibly present in lymph vessels and lymph nodes in the pelvis. For cervical cancer, the most commonly used drug in concomitant chemoradiotherapy is cisplatin 40mg/m2 of body surface once a week for the duration of the radiotherapy.

 

Stage IB1

Stage IB1 denotes macroscopically visible or microscopically invasive cancer greater than stage IA2, but the lesion is less than 4 cm in greatest diameter.

For this stage of cervical cancer, several treatment options are available:

  • Surgery alone;
  • Or radiotherapy combining external irradiation plus brachytherapy, which is a topical irradiation from a short-range radioactive source placed in contact with the tumor;
  • Or combined radiotherapy and surgery.

Overall, none of these treatment methods has been proven to be definitely superior to the others. The choice between them must be based on

1) Specific features of the disease or the individual patient;

2) Preferences of the patient, if any;

3) The expertise and experience of the treatment centre.

The standard surgery consists of the removal of the entire uterus (hysterectomy) with bilateral (both sides) removal of the parametria and ovaries and removal of the lymph nodes in the pelvis (lymphadenectomy), the so-called radical hysterectomy.

More limited fertility-sparing surgery (radical trachelectomy, i.e. removal of only the cervix with or without the parametria) can be considered in young patients with a wish for future pregnancy, if the tumor presents excellent prognostic features. The characteristics allowing the uterus to be spared without taking risks are: the largest diameter of the tumor should be less than 20 mm, the microscopic examination of the biopsy should show no tumor cells in the lymph vessels and the lymph nodes should be clinically free of tumor.

As described for stages IA tumors, in patients treated with upfront surgery, if the laboratory examination of the surgical specimen reveals that the surgery may not have completely removed the tumor, further treatment, by chemoradiation, i.e. a combination of chemotherapy and radiation in the same timeframe, is necessary. This will be the case if tumor cells are found in the margins of the resected specimen and if there is disease within the parametria or lymph nodes.

Stages IB2 to IVA

Stage IB2 denotes macroscopically visible or microscopically invasive cancer greater than stage IA2 with a lesion of more than 4 cm in greatest diameter.

Stage IVA denotes advanced cancer invading other pelvic organs (bladder, rectum) and/or extending beyond the true pelvis, i.e. into the abdomen or the groin.

The standard treatment is radiotherapy together with chemotherapy. Radiation aims at killing the primary tumor and potentially involved lymph nodes and chemotherapy has two objectives: making the radiotherapy more effective and eliminating tumor cells at a distance from the irradiated sites. The drug cisplatin alone is the most common chemotherapy when it is associated with concomitant radiotherapy, but non-platinum based drug regimens appear to be as efficient as platinum-based chemotherapy. Radiation therapy consists of external irradiation (with concomitant chemotherapy) and brachytherapy which is usually performed after the end of external irradiation.

 
   

The total treatment time should be within 55 days. If the para-aortic nodes are involved, then the external irradiation is extended to the para-aortic area.

If according to medical imaging results, the disease has not completely disappeared after completion of the radiotherapy (including brachytherapy) together with chemotherapy, there is an option for additional treatment: complementary surgical removal of the entire uterus (radical surgery). In the more advanced cases, even when the disease appears completely controlled after the radiotherapy together with chemotherapy course, there may be some undetectable residual disease, which will cause relapse. According to some studies, continued adjuvant chemotherapy then offers further benefit, but this is not standard practice. Adjuvant chemotherapy could be considered even if the tumor has disappeared, with a rationale to minimize the risk of metastasis, but the efficacy of additional chemotherapy is not quite established and therefore it is recommended to be given only in the framework of a clinical trial.

Stage IVB

Stage IVB denotes advanced cancer invading distant organs (metastases), e.g. lungs or liver.

 

 

Chemotherapy, although not curative, is able to induce remissions or stabilise the disease. The mainstay of chemotherapy is with platinum compounds, usually cisplatin. Combined chemotherapy with e.g. topotecan or paclitaxel in addition to the platinum compound increases the response rate and the time to progression of the disease, at a cost of more side effects. The choice of chemotherapeutic drugs takes into account pre-existing specific risks for severe side effects, such as kidney, neurological and heart conditions. This chemotherapy is usually given by intravenous infusions in the chemotherapy day unit. To prevent immediate side effects such as digestive upset and allergic reactions, a corticosteroid such as dexamethasone and an anti-vomiting drug are given just before the chemotherapy, and it is accompanied by abundant intravenous fluid administration to prevent kidney damage in case of cisplatin. Like most other chemotherapeutic regimens, there are also intermediate and longer-term side effects. Within weeks of administration, impairment of blood cell production could occur. If blood tests reveal excessive temporary reductions in white blood cell or platelet counts, the next course of treatment must be delayed and its dosage must be adapted. Cisplatin can in some cases cause nerve problems affecting the hands and/or feet (tingling feelings in the skin, numbness and/or pain) and changes in hearing.

In some cases of advanced disease treated with chemotherapy, the primary tumor that had been left in place may bleed or become infected, or otherwise cause major discomfort. Relief can then be obtained by palliative radiotherapy or by surgical removal. The same may apply for metastatic lesions that would be particularly painful like, bone metastases.

 

What are the possible side effects of the treatments?

Risks and side effects of surgery

Some risks are common for every surgical intervention performed under general anasthesia. These complications are unusual and include deep vein thrombosis, heart or breathing problems, bleeding, infection, or reaction to the anasthesia.

The female reproductive organs are located in the pelvis together with the lower urinary tract and the lower digestive tract. During the surgical intervention, the urinary tract and the intestines are at risk of being damaged.

When lymph nodes in the pelvis and along the aorta are removed, this can damage or block the lymph system resulting in lymphoedema, a condition where lymph fluid accumulates in the legs and makes them swell. It can occur right after the intervention, but also later. There is also a risk of lymphocele, which is a collection of lymph fluid within the area which was subjected to surgery. This usually disappears spontaneously.

If a compression of the ureters occurs which endangers the kidney, then urine flow can be restored by inserting a device (drain) in the renal pelvis, by which a channel is established for exit of urine (nephrostomy).

Having a hysterectomy also increases the risk of urinary incontinence and vaginal prolapse years after the surgical intervention, because it can damage or weaken the supporting pelvic floor muscles.

Women operated on before menopause and for whom the operation included removal of the ovaries will experience symptoms of menopause quickly after the operation. Hot flashes, mood swings, night sweats, vaginal dryness and trouble concentrating are then frequent.

Side effects can be relieved through the proper consultation and advice provided by the oncologist and gynaecologists.

Risks and side effects of non-surgical therapies

The most frequent side effects of non-surgical therapies (radiotherapy and chemotherapy) are usually reversible after treatment. Some strategies are available to prevent, or relieve, a certain range of these side effects. This should be discussed upfront with your doctor.

Pelvic radiotherapy

Side effects of external radiotherapy to treat cervical cancer are mainly due to the irradiation of the organs surrounding the cervix and the uterus. Effects of radiation on the urinary tract include painful urination, bladder spasms resulting in an urgent need to urinate, ulceration or necrosis of the inner lining of the bladder, presence of blood in the urine and urinary tract obstruction. Effects of radiation on the lower digestive tract include rectal discomfort, diarrhea, mucous and bloody rectal discharge, and, rarely, perforation of the intestines. Vaginal narrowing is another possible late effect of pelvic radiotherapy. Treatment for these post-radiation reactions should be advised by the oncologist. Modern techniques in external radiotherapy, such as Intensity Modulated Radiotherapy (IMRT), are intended to reduce its toxicity.

Brachytherapy

The aforementioned side effects of external radiotherapy can also appear with brachytherapy but less frequently, since this type of radiotherapy is better targeted. Vaginal dryness is frequent after the treatment. Vaginal narrowing and dryness can also occur and can result in long-term sexual dysfunction. In young women radiation stops the ovarian function and this may result in further vaginal dryness and sexual dysfunction. It may also result in a higher risk for osteoporosis and/or fractures of pelvic bones. Women must be under the care of a specialist for these problems. As cervical cancers are not hormone-dependent, in the absence of contraindications a hormonal treatment can be prescribed to avoid these side effects.

Chemotherapy

Side effects of chemotherapy are very frequent. They will depend on the drug(s) administered, on the doses and on individual factors. If you have suffered from other problems (such as heart problems) in the past, some precautions should be taken and/or adaptation of the treatment should be made. Combinations of different drugs usually lead to more side effects than the use of a single drug.

The most frequent side effect of the chemotherapy drugs used in cervical cancer are kidney damage, hair loss and decreased blood cell count. To prevent kidney damage by cisplatin, an abundant intravenous fluid administration is recommended. Platinum chemotherapy alone does not cause hair loss. Decreased blood cell count can result in anemia, bleeding and infections. Once the chemotherapy is over, the hair grows back and the blood cell count returns to normal.

Other side effects include, in decreasing order of frequency:

  • tiredness,
  • lack of appetite,
  • nausea, vomiting and diarrhea,
  • dehydration,
  • mild changes in nails and skin which soon disappear,
  • inflammation of areas such as the lining of the mouth,
  • loss of sense of taste,
  • painful swelling and inflammation where the injection is given
  • allergic reactions, such as flushing and rash,
  • nerve problems affecting the hands and/or feet (peripheral neuropathy), which can cause tingling feelings in the skin, numbness and/or pain,
  • temporary loss of, or changes in your eyesight,
  • ringing in the ears or changes in your hearing,
  • low blood pressure,
  • slow heart beat,
  • muscle, or joint pain, and
  • seizures.

Other rare but more serious side effects can occur. These especially include stroke, myocardial infarction and damage to the normal function of the kidneys and liver.

All symptoms or abnormalities should be promptly reported to a doctor.

 

What happens after treatment?

It is not unusual to experience treatment-related symptoms once the treatment is over.

  • Anxiety, sleep problems or depression may occur in the post-treatment phase; patients suffering from these symptoms may need special psychological support.
  • Most surgical treatments of cervical cancer leave sexual function unimpaired. Radiotherapy may weaken the linings of the bladder, rectum and vagina, and cause some usually reversible residual urinary, defecation and sexual intercourse problems.
  • Memory deficiencies, difficulties to concentrate and fatigue are not uncommon side effects of chemotherapy and are generally reversible within a few months.

Follow-up with doctors

After the treatment has been completed, doctors will propose a follow-up program consisting of consultations on a regular basis and aiming to:

  • Detect possible recurrence of the tumor:
    • For a treated stage 0, if three sequential Pap tests within two years show no abnormality, the patient’s risk of recurrence is not higher than for a healthy woman to develop cervical carcinoma. These former patients can, after two years, return to the regular screening that is practiced for healthy women, i.e. Pap tests every 3 years.
    • For higher stages, clinical and gynaecological examination including Pap smear is recommended every 3 months for the first 2 years, then every 6 months for the next 3 years, and hereafter yearly
    • For treated higher stages, there should be regular history-taking, inquiry about symptoms, physical examination and further tests in the case of any abnormality.
  • Evaluate adverse effects of the treatment and treat them.
  • Provide psychological support and information to promote returning to normal life.

Return to normal life

It can be hard to live with the idea that the cancer can come back. This is extremely exceptional for correctly treated lower stages. If the initial disease is at a more advanced stage, the risk is higher. Recurrence may be local (e.g. in the vagina or within the pelvis), regional (e.g. in lymph nodes of the groin), or at a distance (e.g. liver, bone or lung metastases). From what is known today, no specific way of decreasing the risk of recurrence after completion of the treatment can be recommended. As a consequence of the cancer itself and of the treatment, return to normal life may not be easy for some people. Questions related to body image, sexuality, fatigue, work, emotions or lifestyle may be of concern to you. Discussing these questions with relatives, friends or doctors may be helpful. Support from ex-patients’ groups or telephone information services and helplines is available in many countries.

What if the cancer comes back?

If the cancer comes back, it is called a recurrence. Recurrence may be local (e.g. at the level of the cervix, in the vagina or within the pelvis), regional (e.g. in lymph nodes of the groin) or at a distance (e.g. liver, bone or lung metastases).

The treatment depends on the extent of the recurrence. Treatment will be as appropriate for the stage that is attained by the recurrence. In case of local recurrence, depending on the case, cure or disease control can still be obtained by surgery, radiotherapy and chemotherapy or a combination thereof. For example, the treatment of a recurrence of a tumor previously treated only by surgery will usually also involve radiotherapy and chemotherapy. Previous brachytherapy does not necessarily preclude later external beam radiotherapy. If external beam radiotherapy has been given before, it can only exceptionally be applied again.

When local or regional control of the disease by these means is no longer possible, so-called palliative chemotherapy (i.e. no longer aiming at cure, but at temporary control of the disease and prolonged survival) is a possible choice. In rare cases of locoregional recurrence affecting pelvic organs such as the bladder or the rectum, their surgical removal (pelvic exenteration) can be proposed. It may then be necessary to create stomas for urinary and fecal evacuation.

If the cancer recurs as a metastatic cancer it should be treated as stage IVB cancer, with chemotherapy. In this case and whenever possible, a biopsy of the suspect lesion should be made for a laboratory examination to verify that it is a metastasis of the cervical cancer and not a metastasis of another cancer, or not a metastasis at all. As in initial stage IVB cancer surgery or radiotherapy of any isolated metastasis could also be considered in order to control a particularly threatening lesion and to improve quality of life.

 

 

Synonyms

Cervical cancer

Cervical tumour

Cervical tumor

Cancer of the cervix

Tumour of the cervix

Tumor of the cervix

Cancer of the uterine cervix

Tumour of the uterine cervix

Tumor of the uterine cervix

Cancer of the cervix uteri

Tumour of the cervix uteri

Tumor of the cervix uteri

Uterine cervix carcinoma

Therapies by type

The following list of treatments is based on what we have found in scientific studies about cancer. More information about the listed therapies can be found under the tab THERAPIES. For registered drugs, radiotherapy and surgical interventions, approval by the authorities is given.

Surgical interventions

Procedures involving instrumental means to investigate or treat a cancer, or to improve the body’s functions or appearance. Generally, a surgical intervention involves an incision. More

Radiotherapy

Medical use of high-energy radiation to kill cancer cells and reduce tumor size. More

Registered drugs

Anti-cancer drugs with market authorization in the USA or in countries of the European Union. More

Cell-based therapies

Administration to patients of their own or someone else’s manipulated human cells. More

Synthetic products (excluding registered drugs)

Synthetically produced substances or modified natural products that are not registered as anti-cancer drugs.

Natural products (excluding registered drugs)

Substances found in nature that usually have a pharmacological or biological activity. More

Energy based therapies

Use of electromagnetic energy including electricity, magnetic fields, radio waves, microwaves, infrared rays and light to diagnose or treat disease.

Clinical trials

A clinical trial is a research study conducted with patients to evaluate whether a new treatment is safe (safety) and whether it works (efficacy). Clinical trials are performed to test the efficacy of drugs but also non-drug treatments such as radiotherapy or surgery and combinations of different treatments. Clinical trials take place in all kinds of hospitals and clinics, but mostly in academic hospitals. They are organized by researchers and doctors.

The Anticancer Fund provides a tool to search for phase III clinical trials by type of cancer and by country. For Belgium, the Netherlands, Switzerland, Luxembourg, France and the UK, the Anticancer Fund provides contacts to get more information about the phase III clinical trials currently ongoing. Discuss the possibilities of participating in one of these clinical trials with your doctor.

The list of the phase III clinical trials for cervical cancer is available here.