title: A small, incidentally detected pancreatic somatostatinoma: report of a case.
abstract: We report an asymptomatic 72-year-old woman with a small, incidentally detected, pancreatic somatostatinoma. The tumor, measuring 1 cm in diameter, showed a hypervascular pattern of contrast enhancement on computed tomography, and was found angiographically to receive a blood supply from the posterior superior pancreaticoduodenal artery. The results of preoperative hormonal assays all were normal. No assay for somatostatin was performed. No abnormality in either the pituitary or parathyroid was found. We thus considered the tumor to be a sporadic, nonfunctioning endocrine cell tumor, and enucleation was carried out. As some tumor cells in the resected specimen showed immunoreactivity for somatostatin, a diagnosis of somatostatinoma was made. Therefore, the possibility of somatostatinoma should be kept in mind when making a differential diagnosis of pancreatic endocrine tumors in cases where even a small hypervascular tumor is detected on enhanced computed tomography.
authors.affiliation: Department of Surgery,Iwata City General Hospital, 512-3 Okubo, Iwata, Shizuoka 438-8550, Japan.
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Tomono
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kitamura
authors.forename: Masanori
authors.initials: M
authors.lastname: Iwase
authors.forename: Shingo
authors.initials: S
authors.lastname: Kuze
authors.forename: Futoru
authors.initials: F
authors.lastname: Toyoda
authors.forename: Naoharu
authors.initials: N
authors.lastname: Mori
authors.forename: Eiji
authors.initials: E
authors.lastname: Tamoto
authors.forename: Kazunori
authors.initials: K
authors.lastname: Inuzuka
authors.forename: Hiromine
authors.initials: H
authors.lastname: Fujita
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Konishi
authors.forename: Masaaki
authors.initials: M
authors.lastname: Naito
authors.forename: Fumihiko
authors.initials: F
authors.lastname: Tanioka
mesh_terms: D000368:Aged; D000792:Angiography; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000601:surgery; D010190:Pancreatic Neoplasms / Q000098:blood supply / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D013005:Somatostatinoma / Q000098:blood supply / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery