The Present State of Radiological Efficacy in Diagnosing EMR-indicated Early Gastric Cancer and Cruxes Involved Tohzo Hosoi 1 1Department of Gastroenterology, Tokyo Metropolitan Tama Cancer Detection Center Keyword: EMR適応早期胃癌 , EMR非適応早期胃癌 , X線診断 pp.1599-1613
Published Date 2001/12/25
DOI https://doi.org/10.11477/mf.1403103382
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 Analysing the present state of radiology to determine whether a lesion is to be treated by EMR (endoscopic mucosal resection). The study is based on early gastric cancers (278 cases,296 lesions) where both pre-operative x-ray and endoscopic examination had been carried out and histological examination on resected specimens had been completed. We came to the following conclusions.

 1) On the basis of 102 lesions of early gastric cancer (m: 101, sm: 1), for which EMR was indicated, 94 lesions (92.2%) were correctly diagnosed as so indicated by x-ray. This detection rate was slightly inferior to endoscopy (96 lesions, 94.1%).

 2) However, on the basis of sm cancers not indicated for EMR (sm1: 29 lesions), only 7 lesions (6.5%) were misdiagnosed by x-ray as indicated for EMR, while 15 lesions (14.0%) were misdiagnosed by endoscopy. In other words, x-ray was superior to endoscopy in the respect. In the case of 78 sm2 lesions, while endoscopy misdiagnosed as many as 11 lesions (14.1%) as indicated for EMR, x-ray misdiagnosed only 3.8% (3 lesions).

 Accordingly, pertaining to the decision of EMR indication in early gastric cancer, x-ray diagnosis was more accurate in diagnosing lesions as not indicated for EMR, than in diagnosing those lesions for which EMR was indicated.

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