What endometriosis cyst will be called "chocolate" cyst?

This disease characterized by the pathological changes of the ectopic endometrial are subject to the effects of estrogen, In repeated cyclical bleeding resulting lesions surrounding tissue fibrosis, finally forming nodules or masses. Incision mass and nodules, we can see that old bleeding and scar, visible examination of endometrial glands and stroma in the pelvic endometriosis, ovarian endometriosis is the most common location. If ovarian lesions limited to the surface, we can see the size cyst. Cysts can be unilateral, bilateral is also the largest diameter can be greater than 10 cm in cyst containing liquid brown paste, it also called ovarian chocolate cysts. Often hemorrhagic cyst or damaged surface, so the whole cyst and neighboring organogenesis adhesion, and the broad ligament fixed after leaves, embedded in the uterus or rectum within. In addition uterine rectum Department peritoneal both bone and ligament of the uterus is often the site and location was bleeding points, or purple brown nodules. Endoscopic can see the ectopic endometrial glands and stroma. As cyclical endometrial hyperplasia, exfoliation, bleeding "essence" is hard to change, therefore, still in the monthly transfer repeated bleeding, the more plot more mutual adhesion, became a mass, "a endometrial tumors . " In the ovarian ectopic endometrial, cyclical bleeding, formation of the accumulation of fluid containing chocolate-like tumors - medically called "ovarian chocolate cysts." This larger chocolate cyst was considered follicular or luteal comes from the change as cysts. Ovarian surface may also be a downward ectopic endometrial growth results.