title: Melanotic schwannoma of the pancreas: report of a case.
abstract: We report a case of pancreatic melanotic schwannoma mimicking an epithelial cystic neoplasm of the pancreas. A 67-year-old Japanese woman underwent routine ultrasonography, which showed a large cystic mass in the head of the pancreas. Contrast-enhanced computed tomography (CT) and magnetic resonance imaging (MRI) showed an inhomogeneous, round cystic mass, which was encapsulated, in the head of the pancreas. We performed pyrolus-preserving pancreatoduodenectomy under the tentative diagnosis of a cystic neoplasm of the pancreas. The histopathologic diagnosis was benign melanotic schwannoma. The patient is now well after 43 months of follow-up. We describe the CT and MRI findings in detail, and review the literature on previously reported cases of pancreatic schwannoma.
authors.affiliation: Department of Surgery, Miyazaki Prefectural Hospital, 5-30 Kitatakamatsu-cho, Miyazaki 880-8510, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Akiyoshi
authors.forename: Yuji
authors.initials: Y
authors.lastname: Ueda
authors.forename: Kohsuke
authors.initials: K
authors.lastname: Yanai
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yamaguchi
authors.forename: Masahiko
authors.initials: M
authors.lastname: Kawamoto
authors.forename: Kiyokazu
authors.initials: K
authors.lastname: Toyoda
authors.forename: Tohru
authors.initials: T
authors.lastname: Hayashi
authors.forename: Jiro
authors.initials: J
authors.lastname: Ohuchida
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008545:Melanoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D009442:Neurilemmoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D016577:Pancreaticoduodenectomy; D014057:Tomography, X-Ray Computed