endometrial hyperplasia
Endometrial hyperplasia is an example of abnormal hormone-induced hyperplasia. After a normal menstrual period, there is a rapid burst of proliferative activity that is stimulated by pituitary hormones and ovarian estrogen.
It is brought to a halt by the rising levels of progesterone, usually about 10 to 14 days before the anticipated menstrual period. In some instances, however, the balance between estrogen and progesterone is disturbed. This results in absolute or relative increases in the amount of estrogen, with consequent hyperplasia of the endometrial glands.
This form of hyperplasia is a common cause of abnormal menstrual bleeding. Benign prostatic hyperplasia is another common example of pathologic hyperplasia induced by responses to hormones, in this case, androgens. Although these forms of hyperplasia are abnormal, the process remains controlled, because the hyperplasia regresses if the hormonal stimulation is eliminated.
References
Robbins