title: Endoscopic ultrasonography of gastric myogenic tumor. A comparative study between histology and ultrasonography.
abstract: In order to find a correspondence between the sonographic findings of endoscopic ultrasonography (EUS) and the histology of gastric myogenic tumors, histologic specimens (24 cases) and preoperative ultrasonograms (10 cases) were examined. Histologically, the incidence of necrosis within the tumor was more frequent and the area of necrosis was larger in leiomyosarcoma than in leiomyoma. Liquefaction necrosis was observed only in leiomyosarcoma. By EUS, myogenic tumors originating from the proper muscle were delineated as clearly demarcated hypoechoic tumors arising from the fourth layer. Irregularly shaped sonolucent areas within the tumor corresponded to liquefaction necrosis. Thus, sonolucent areas may be indicative of leiomyosarcoma.
authors.affiliation: Second Department of Internal Medicine, Nagoya University School of Medicine, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Nakazawa
authors.forename: J
authors.initials: J
authors.lastname: Yoshino
authors.forename: T
authors.initials: T
authors.lastname: Nakamura
authors.forename: T
authors.initials: T
authors.lastname: Yamanaka
authors.forename: S
authors.initials: S
authors.lastname: Hase
authors.forename: Y
authors.initials: Y
authors.lastname: Kojima
authors.forename: S
authors.initials: S
authors.lastname: Ohasi
authors.forename: Y
authors.initials: Y
authors.lastname: Niwa
mesh_terms: D005260:Female; D005753:Gastric Mucosa / Q000473:pathology; D005773:Gastroscopy; D006801:Humans; D007889:Leiomyoma / Q000175:diagnosis* / Q000473:pathology; D007890:Leiomyosarcoma / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000473:pathology; D009336:Necrosis / Q000473:pathology; D013270:Stomach / Q000473:pathology; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000473:pathology; D014463:Ultrasonography / Q000379:methods