Abstract
A 40-year-old woman was referred to the department of gynecology in our hospital with a suspicion of swelling of the right ovary that was revealed by transvaginal ultrasound at another hospital following her abortion on the 5th-week gestation. Abdominal magnetic resonance imaging showed a cystic tumor 6cm in diameter in the vicinity of the right ovary. Surgery was started to perform laparoscopic-assisted right ovariectomy with a preoperative diagnosis of a right ovarian cyst, but the both ovaries were found to be normal during the surgery. The cystic tumor was adjacent to the dorsal aspect of the appendix. Because a possibility of a malignant tumor could not be ruled out, ileocecal resection was performed. The histopathological diagnosis was mucinous cystadenoma arisen in the mesoappendix (of borderline malignancy).
In general mucinous cystadenomas in the abdominal cavity most commonly arise in the ovary and the pancreas, but rarely in the mesenteries including the mesoappendix. So far few cases of mucinous cystadenoma arisen in the mesentery have been reported and then we present this case together with a review of the literature.
