Primary retroperitoneal mucinous cystadenoma is a extremely rare tumor, reported exclusively in women. There have been about 30 cases of reports in worldwide literature, and only 3 reported cases in Korea to date. Because this tumor is histologically heterogenous and may have metastatic potential, a careful surgical excision with a thorough histopathological examination is needed, and close follow-up is mandatory. While transabdominal laparotomy and complete surgical excision is a standard of treatment, there had been a case-report of laparoscopic resection in 1998. Herein we report a case of primary retroperitoneal mucinous cystadenoma, which was successfully resected by laparoscopy, in 28-year-old woman.ope
