子宫内膜异位症

子宫内膜异位症是一种良性但处理较为棘手的妇科疾病。其特征是有功能的子宫内膜腺体和间质出现在子宫腔外的部位。子宫内膜异位病灶与正常的子宫内膜对卵巢分泌的激素有相似的反应，异位病灶周期性出血可能导致局部炎症及粘连形成，继而出现临床症状，特别是盆腔疼痛。子宫内膜异位症在青春期前不会发生，绝经后由于雌激素水平降低，病情趋于缓解。

Endometriosis

Endometriosis is a benign but troublesome gynaecological condition. h is characterised by deposits of functioning endometrial tissue outside the usual location in the uterine cavity. These deposits respond to stimulation by ovarian hormones in a similar manner to the endometrium. Cyclical bleeding thus occurs, which causes local inflammarion and adhesion formation. This may give rise to clinical symptoms, and in particular pelvic pain. Endometriosis does not occur before puberty, and tends to regress after the menopause because of declining oesteogen levels.