Background: Leiomyoma of the ovary is rare, usually small, and rarely
induces serious symptoms. Case: We report a case of a leiomyoma of the
ovary that weighed 11.65 kg and led to acute abdomen and bilateral hy
dronephrosis. To our knowledge, this complication has not been describ
ed previously. Transabdominal sonography and computed tomography scan
did not identify tumor type or origin. We performed a total abdominal
hysterectomy and bilateral salpingo-oophorectomy. Abdominal symptoms a
nd defects in urinary function disappeared completely after surgery. C
onclusion: In very few cases, benign leiomyoma of the ovary may cause
giant pelvic masses and peritoneal irritation.