title: Ileal schwannoma in which blood loss scintigraphy was useful for diagnosis.
abstract: An 85-year-old woman was hospitalized with severe melena of unknown origin. Upper gastrointestinal (GI) endoscopy and lower GI endoscopy did not detect the origin and we could not establish any diagnosis. To explore the bleeding site, 99mTc-HSA blood loss scintigraphy was performed and a tumor of the small intestine was suspected. Fluoroscopic examination of the small intestine and abdominal CT scan confirmed an ileal tumor measuring 4x3 cm. The mass was a well-demarcated tumor about 80 cm proximal to Bauhin's valve. Partial resection of the ileum was carried out and the tumor was histologically diagnosed as schwannoma. Thereafter, there has been no recurrence of melena nor metastasis of the tumor. It is thought that blood loss scintigraphy is a useful method for unexplained exacerbation of melena.
authors.affiliation: Department of Gastroenterology, Tsurumi Hospital, Beppu.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Nagai
authors.forename: Kenji
authors.initials: K
authors.lastname: Fujiyoshi
authors.forename: Kenji
authors.initials: K
authors.lastname: Takahashi
authors.forename: Ryutarou
authors.initials: R
authors.lastname: Torishima
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nakashima
authors.forename: Akihiro
authors.initials: A
authors.lastname: Uchida
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Ookawara
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Fujitomi
authors.forename: Kouji
authors.initials: K
authors.lastname: Suzuki
authors.forename: Shigeo
authors.initials: S
authors.lastname: Yokoyama
authors.forename: Ryugo
authors.initials: R
authors.lastname: Sato
authors.forename: Kazunari
authors.initials: K
authors.lastname: Murakami
authors.forename: Toshio
authors.initials: T
authors.lastname: Fujioka
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D007078:Ileal Neoplasms / Q000150:complications / Q000000981:diagnostic imaging*; D007150:Immunohistochemistry; D008551:Melena / Q000209:etiology; D009442:Neurilemmoma / Q000150:complications / Q000000981:diagnostic imaging*; D011859:Radiography; D011877:Radionuclide Imaging; D013668:Technetium Tc 99m Aggregated Albumin; D016284:Technetium Tc 99m Pentetate
chemical_list: D013668:Technetium Tc 99m Aggregated Albumin; C057162:technetium Tc 99m DTPA HSA; D016284:Technetium Tc 99m Pentetate