Endometrioma is a type of ovarian cyst that develops secondary to the presence of endometriosis. It is, also, called ‘’chocolate cyst’’ due to the characteristic colour of the fluid it contains. 17% to 44% of women with endometriosis have an endometrioma (1), of which, in 19% to 28% of cases, the endometrioma is bilateral (2). The exact cause, as…