Radiological Findings of the EGJ and the SCJ Hisato Kato 1 , Tamae Kasawa 1 , Goro Yamaki 2 1Medical Center of Health Science, Toranomon Hospital, Tokyo 2Department of Gastroenterology, Kokoro to Karada no Genki Plaza, Tokyo Keyword: radiology esophagography , esophagogastric junction , squamocolumnar junctionangle of His pp.1075-1082
Published Date 2009/6/25
DOI https://doi.org/10.11477/mf.1403101697
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 It is estimated that Barrett's esophagus and Barrett's carcinoma will increase in the near future in Japan as in the Western countries, because of increasing incidence of reflux esophagitis. In this background, precise radiological determination of EGJ is required to diagnose whether a lesion is located at the lower esophagus or at the proximal stomach. Currently radiological EGJ is defined by the point where the gastric rugae cease and the angle of His. But it is often difficult to determine EGJ, because these findings are often invisible in cases with mild or physiological hiatal hernia. Therefore, in addition to these findings, location of SCJ is necessary to determine EGJ, because EGJ always exists at or below the SCJ. In preoperative double contrast examination via a nasal tube, SCJ is depicted easily in a prone position. In one third of routine examinations, SCJ is detected successfully by esophagography in an upright position, and contributes to diagnosis of EGJ. In conclusion, depiction of the SCJ in addition to the gastric rugae and the angle of His are practicable and necessary to determine the EGJ.

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