title: Laparoscopic resection of a retroperitoneal ancient schwannoma: a case report and review of the literature.
abstract: Schwannomas are benign tumors that arise from neural sheath Schwann cells. Solitary benign schwannomas are generally located in the head and neck, often along the cranial nerves, and are a particularly rare neoplasm among tumors of the retroperitoneal space. A 67-year-old man undergoing a general health check was incidentally found to have a mass beside the left kidney. Computed tomography (CT) revealed a cystic adrenal mass located cephalad to the left kidney. Retroperitoneoscopic resection of the retroperitoneal mass was performed. The pathological diagnosis was retroperitoneal benign schwannoma consisting of mixture of a Antoni-A and -B type cells. We report a case of retroperitoneal schwannoma and discuss eleven previous reports treated by laparoscopic surgery in the English literature. Laparoscopic resection may be useful because a retroperitoneal schwannoma, which is commonly localized and hypovascular, can easily be dissected from the adjacent tissues.
authors.affiliation: Department of Urology, Mazda Hospital, Hiroshima, Japan. uroltateki@yahoo.co.jp
authors.forename: Tateki
authors.initials: T
authors.lastname: Yoshino
authors.forename: Kenji
authors.initials: K
authors.lastname: Yoneda
mesh_terms: D000368:Aged; D006801:Humans; D010535:Laparoscopy; D008297:Male; D009442:Neurilemmoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D014463:Ultrasonography