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Esophageal Schwannoma Detected by FDG-PET, Report of a Case Masaho Ota 1 , Tsutomu Nakamura 1 , Hidetoshi Oguma 1 , Kousuke Narumiya 1 , Takuya Sato 1 , Masakazu Yamamoto 1 1Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, Tokyo Keyword: 食道腫瘍 , 粘膜下腫瘍 , 神経鞘腫 , FDG-PET , 内視鏡診断 pp.349-354
Published Date 2008/3/25
DOI https://doi.org/10.11477/mf.1403101301
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 A 59-year-old woman underwent medical screening and FDG-PET detected uptake by a lesion in the thoracic esophagus. Endoscopy showed a smooth submucosal tumor that was completely covered with normal mucosa, while endoscopic ultrasonography revealed a well-demarcated and uniformly low echoic tumor compressing the muscle layer. Barium meal showed a smooth elevated lesion in the upper thoracic esophagus, while CT revealed a tumor 20 mm in diameter that projected to the left of the esophageal wall and was poorly enhanced. Leiomyoma was suspected, so enucleation was performed. Histopathological examination showed spindle-shaped cells with a palisading arrangement, while immunohistochemistry demonstrated positive staining for S-100 protein and vimentin. Accordingly, the pathological diagnosis of the tumor was schwannoma.


Copyright © 2008, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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