1989 Volume 159 Issue 3 Pages 227-235
ASAKI, S., NAKAYAMA, Y., OHARA, M., HIRASAWA, Y., KANAZAWA, N. and OTA K. Comparison of Efficacy of Endoscopic Ultrasonography and Submucosography in Diagnosing the Depth of Gastric Cancer Invasion. Tohoku J. Exp. Med., 1989, 159 (3), 227-235-Diagnosis of the depth of the cancer invasion is necessary to select the indication of endoscopic treatment. We used endoscopic ultrasonography (EUS) and Submucosograhy (SMG) to diagnose the depth of cancer invasion and compared their efficacy against 63 lesions in 60 cases of gastric and esophageal cancers. SMG could diagnose the invasion correctly in 97% of m (mucosa) cancers, 88% of sm (submucosa) cancers and 100% of advanced cancers. On the other hand, linear-type EUS could diagnose the cancer invasion correctly in 60% of the m cancers, 83% of the sm cancers and 100% of the advanced cancers. The results of the comparison of radial-type EUS and SMG showed similar results. Both EUS and SMG are appropriate for the judgement of endoscopic treatments. However, for the selection of the indication of endoscopic treatment which is applied to relatively small sized lesions in general, SMG appears to be superior to EUS in both resolution power and accuracy in shooting.