A rare association between ovarian endometriosis and bilateral ovarian teratoma. Case report

A 28 year woman complained for a sudden abdominal pain with some of the classical signs of the acute abdomen. Since a bilateral ovarian mass was found at ultrasound examination, clinician decided that patient underwent a urgent surgery. At histology, this mass resulted to be a bilateral triphillic mature teratoma. A focus lined by endometrioid epithelium and embedded in the modified stroma of endometrial type, was found beyond the residual cortex of the left ovary. There was some fibrotic tissue separating the endometrial and teratomatous lesions. To our knowledge, these two diseases have never been reported as associated in literature, but this association has a clinical relevance because an endometriotic pathology can reveal a silent teratoma with bilateral ovarian localization.