[A Case of Retroperitoneal Mature Teratoma Successfully Treated by Laparoscopic Adrenalectomy].

We report a case of retroperitoneal mature teratoma which was successfully treated by laparoscopic adrenalectomy. A 37-year-old woman complaining of right abdominal discomfort was referred to our hospital because computed tomography showed an adrenal tumor at another hospital. Magnetic resonance imaging showed a 10 cm adrenal tumor that consisted of fat with calcification. Endocrine examination showed no abnormal findings. Under the suspicion of myelolipoma, we performed laparoscopic right adrenalectomy. Histological diagnosis was mature teratoma. The patient had no recurrence at 5 years after surgery.