title: Laparoscopic resection of ancient schwannoma embedded in the psoas muscle.
abstract: Schwannoma is a tumor originating from the Schwann cell of the peripheral nerve sheath. The diagnosis of schwannoma is based on histologic analysis of surgically excised sample. Retroperitoneal ancient schwannoma, a variant of schwannoma, is rarely observed in clinical practice. We report the case of a 46-year-old man with a retroperitoneal tumor embedded in the psoas muscle, which was treated by laparoscopic resection. The operative result was good, and pathologic analysis revealed a 5.5 × 4.5 cm ancient schwannoma.
authors.affiliation: Department of Urology, Institute of Wonkwang Medical Science, Wonkwang University School of Medicine, Iksan, Republic of Korea. seraph@wonkwang.ac.kr
authors.forename: Ill Young
authors.initials: IY
authors.lastname: Seo
authors.forename: Yanjmaa
authors.initials: Y
authors.lastname: Boldbaatr
authors.forename: Keum Ha
authors.initials: KH
authors.lastname: Choi
mesh_terms: D006801:Humans; D010535:Laparoscopy / Q000379:methods*; D008297:Male; D008875:Middle Aged; D019042:Muscle Neoplasms / Q000601:surgery*; D009442:Neurilemmoma / Q000601:surgery*; D016658:Psoas Muscles / Q000601:surgery*; D012186:Retroperitoneal Neoplasms / Q000601:surgery*