Huge Endometrioma Mimicking Ovarian Cancer: A Case Report

Endometrioma (ovarian endometrial cyst) usually occurs in women of reproductive age. We report a rare case of huge ovarian endometrioma that was as large as a watermelon. A 26-year-old woman from Iran complained of abdominal distention over approximately 9 months. Diagnostic imaging revealed a semi solid mass measured about 25 centimeter. After doing laparotomy, an ovarian endometrioma was diagnosed in pathology.