Ovarian malignant mesothelioma with endometrial cyst: a case report and review of literature

Ovarian malignant mesotheliomas are very uncommon and special tumor that occur in women and not associated with asbestos exposure. The preoperative diagnosis is not easy to attain and the outcome after treatment of this disease is uncertain. Here, we report a highly unusual case of malignant ovarian mesothelioma and review the relevant literatures on it. A 39-year-old Chinese woman presented to a local hospital with pelvic pain. Ultrasonography revealed a right adnexal mass which was suspected as endometriotic cyst. The right salpingectomy and multiple biopsies of right ovary were performed via laparoscopy. The final pathologic diagnosis of ovarian malignant mesothelioma with endometrial cyst, epithelia type was made through histologic and immunohistochemical examination. Endometriosis may be the causative factor. To the best of our knowledge, there is no previous case reported before. In order to better define the features of such rare disease and avoid missed diagnosis, we should collect more cases of ovarian malignant mesothelioma and do longer follow-up of the patients.