2014 年 30 巻 1 号 p. 236-239
An ovarian carcinoid tumor is extremely rare; the incidence is about 1.3% of all carcinoid tumors. A case of a primary ovarian carcinoid tumor with a mature cystic teratoma diagnosed after laparoscopic surgery is presented. The patient is a 35- year-old gravida 2, para 2 who was diagnosed with a left ovarian tumor during her second pregnancy. Magnetic resonance imaging (MRI) revealed a mature cystic teratoma. In the third postpartum month, she underwent a laparoscopic assisted ovarian cystectomy. The pathological examination revealed that most of the tumor was a mature cystic teratoma, including a small focal lesion of insular carcinoid tumor, which showed a positive reaction with chromogranin- A. Therefore, a laparoscopic left salpingo-oophorectomy was performed. Although the prognosis of this tumor is favorable, careful periodic examinations might be necessary because a small number of cases can recur.