Problems Associated with Radiographic Diagnosis of Depth Invasion According to Gastiric Cancer Sites Tozo Hosoi 1 1Tokyo Metropolitan Cancer Detection Center pp.185-197
Published Date 1987/2/25
DOI https://doi.org/10.11477/mf.1403112209
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 The state of the art of radiographically diagnosing depth invasion in depressed type gastric cancer were described to elucidate problems and strategies against them with respect to the cancer sites and mucosal regions. Accuracies of radiographic diagnosis were 63.2%,49.2%, and 79.9%, from m, sm, and early cancer-mimicking advanced cancers, respectively.

 In m cancer, lesions involving anterior wall and gastric fundic glands, undifferentiated type and ones accompanying ulcer tended to have discrete border with marked unevenness in depressed area and distinct change in the tips of mucosal folds. Because of these characteristics m cancers were likely to be erroneously diagnosed as sm or advanced cancers.

 In sm cancer, the cardia and pylorus are distinguished from other areas in that traditional diagnostic principles are not applied because of anatomical and radiographic characteristics. Therefore, accuracies are extremely low in these areas, the cardia being underestimated and the pylorus being overestimated. However, there are few sm cases erroneously diagnosed as having m cancer.

 Thus, m and sm cancers are not easily differentiated. Therefore, it is mandatory that new diagnostic parameters with higher accuracy should be developed and that traditional diagnostic parameters should be further discussed to make problems explicit and to withdraw strategies against them.

Copyright © 1987, Igaku-Shoin Ltd. All rights reserved.


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