<prompt> Endometriosis is commonly associated with:BL chocolate cyst of ovaryAdenomyosisFibroidLuteal cyst  <response>: The ovary is the most common site and involved in 3040 of cases. The lesion is nearly always bilateral. It sometimes appears as multiple burnt match head spots on the surface of the ovary and sometimes as the typical tarry cysts in a disorganised organ surrounded by dense adhesisions.Chocolate cysts of ovary: They are true cysts The cysts enlarge with cyclic bleeding. The serum gets absorbed in between periods and the content inside becomes chocolate, tarry brown in color. Histology Lining epithelium is columnar epithelium. Beneath the epithelium are large macrophages called as pseudoxanthoma cells which have brown cytoplasm due to ingested blood pigments like hemosiderin. Treatment of chocolate cystendometrioma.Laparoscopic management is the preferred managementBefore concluding lets rule out other options. Adenomyosis is associated with endometriosis but vice versa is not true; similarly fibroid uterus is associated with endometriosis but vice versa is not true Ruling out options b and c. Multiple luteal cysts in the ovary are seen in case of Pregnancy Multiple pregnancy HCG therapy Hydatidiform Mole ChoriocarcinomaThus option d is incorrect.There is no association between endometritis and endometriosis i.e. option e is incorrect. 