[A case of retroperitoneal ganglioneuroma]

A 50-year-old woman was admitted under a diagnosis of abdominal tumor. Ultrasonography and CT scanning were performed, and a right retroperitoneal tumor was detected. Absolute curative resection was performed. The resected tumor was 13.5 x 11.5 x 9.0 cm, and histologically diagnosed as ganglioneuroma. To our knowledge, 99 cases have been reported in Japan. During a twelve-month follow-up period, the postoperative course was uneventful and no recurrence had been noted.