子宫内膜异位症是指具有生长功能的子宫内膜,在子宫被覆面以外的地方生长繁殖而形成的一种妇科疾病。其中,异位于子宫肌层的,称为内在性子宫内膜异位症或子宫腺肌症;异位于子宫肌层以外部位的,称为外在性子宫内膜异位症。外在性子宫内膜异位症较内在性子官内膜异位症为多,因而临床上所称子宫内膜异位症一般指外在性子宫内膜异位症。 Endometriosis refers to the function of the growth of the endometrium, in the uterus covered with growth and reproduction outside the formation of a gynecological disease. Among them, ectopic in the myometrium, known as intrinsic endometriosis or adenomyosis; heterotopic in the myometrium outside the position, known as extrinsic endometriosis. External endometriosis is more than intrinsic endometriosis, so clinically called endometriosis generally refers to extrinsic endometriosis.