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Diagnosis of Gastric Myogenic Tumor by Endoscopic Ultrasonography Akimichi Chonan 1 , Fukuji Mochizuki 1 , Naotaka Fujita 1 1Department of Gastroenterology, Sendai City Medical Center Keyword: 胃平滑筋腫 , 胃平滑筋肉腫 , 超音波内視鏡診断 pp.1133-1140
Published Date 1995/8/25
DOI https://doi.org/10.11477/mf.1403105503
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 Preoperative endoscopic ultrasonography (EUS) examination was performed in 44 patients with 45 gastric myogenic tumors who underwent gastrectomy from 1986 to 1994. A study of the efficacy of EUS for distinguishing leiomyosarcoma (18 patients with 18 tumors) from leiomyoma (26 patients with 27 tumors) was carried out. In this study, we classified gastric myogenic tumors into three types based on the internal echoic pattern shown by EUS. Type A consisted of tumors whose internal echoic pattern was hypoechoic and homogeneous. Type B, on the other hand, was comprised of tumors whose internal echoic pattern was a mixture of hypo-and hyperechoic patterns. Type C consisted of tumors whose internal echoic pattern was a mixture of hypo-and hyperechoic patterns with an echoic area. The results were as follows:

 1) EUS findings corresponded precisely to the histological findings (Table 3).

 2) The tumors with type A internal echoic pattern were consistent with leiomyoma, and those with type B or type C internal echoic pattern were suspected to be leiomyosarcoma (Table 3, Fig. 4). The mixture of hypoand hyperechoic patterns as detected by EUS were thought to be signs of malignancy.

 3) The change of internal echoic pattern or rapid growth as detected by EUS were thought to be signs of malignancy (Table 4, Fig. 5).

 4) EUS was useful for differentiating gastric leiomyosarcoma from leiomyoma.


Copyright © 1995, 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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