Laparoscopically resected Castleman's disease in the pelvic retroperitoneum: A case report.

Castleman's disease is a rare benign disorder of unknown etiology characterized by proliferation of lymphoid tissues. Castleman's disease arising from pelvic retroperitoneum is clinically rare. The present case report describes a rare case of laparoscopically resected Castleman's disease in the pelvic retroperitoneum associated with benign ovarian cyst. A 47-year-old woman, gravida 5, para 3, was referred to to the Department of Obstetrics and Gynecology of Wakayama Medical University with a suspected pelvic tumor. Magnetic resonance imaging revealed that the solid tumor was localized in the retroperitoneal space at the right side of the pelvis. The patient underwent laparoscopic surgery for the resection of the pelvic retroperitoneal tumor, with complete tumor resection. Postoperative pathological examination established the diagnosis of Castleman's disease. The postoperative course was uneventful, with no evidence of local recurrence or systemic disease 6 months after diagnosis.