Estrogen-/Progesterone receptors

Estrogen-/Progesterone receptorssearch for term

The growth of normal breast cells is controlled by hormones, especially estrogen and progesterone. These hormones attach to special places reserved in the cell: the so-called "receptors". If the breast cancer cells also have similar receptors, they resemble normal breast cells. These cancer cells are called "estrogen-positive", "progesterone-positive” or, in general, "receptor-positive". If cancer cells are receptor-positive, they may be targeted with the aid of hormone therapy, in which medication is administered which blocks the action of the hormones. If cancer cells are receptor-negative, they do not respond to hormone therapy, which makes its use pointless.