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Submucosal Tumor of the Stomach:CT and MRI Diagnosis Yutaka Ozaki 1 , Yuki Yamashiro 2 , Takao Kimizuka 3 , Mari Aida 1 , Maki Amano 1 , Masato Kawabe 4 , Ryohei Kuwatsuru 2 1Department of Diagnostic Radiology, Juntendo University, Nerima Hospital, Tokyo 2Department of Diagnostic Radiology, Juntendo University, School of Medicine, Tokyo 3Department of Diagnostic Radiology, Juntendo University, Urayasu Hospital, Urayasu, Japan 4Department of Gastroenterology, Juntendo University, Nerima Hospital, Tokyo Keyword: subepithelial mass , CT , MRI , GIST(gastrointestinal stromal tumor) pp.1291-1299
Published Date 2017/9/25
DOI https://doi.org/10.11477/mf.1403201169

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 We discussed usefulness of the CT and MRI in evaluating for the gastric submucosal tumors, and illustrated several representative cases. GIST(gastrointestinal stromal tumors)most often locate at gastric body and have a tendency of extraluminal extension. GISTs may show central necrosis, hemorrhage or cystic degeneration. Schwannomas show well circumscribed oval shaped mass. On the enhanced CT or MRI, schwannomas may show homogeneous and persistent enhancing pattern. Glomus tumors tend to locate at gastric antrum. On the enhancing study, glomus tumors may show strong and persistent enhancement which is similar to those of portal vein and spleen. Ectopic pancreas predominantly locates at greater curvature of the gastric antrum and shows submucosal tumor with central depression. The prominent enhancement of overlying gastric mucosa and the long diameter/the short diameter ratio greater than 1.4 are found to be significant for differentiating ectopic pancreas from other tumors. CT and MRI are not only useful for evaluating precise tumor extent, but also can speculate pathological diagnosis of gastric submucosal tumors, based on the combined information of location, extension, enhancing pattern, and internal architecture of the tumors.


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

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