1992 Volume 34 Issue 4 Pages 775-783
We studied endoscopic appearance of the proximal margin (OW) of intramucosal cancerous extention in 117 cases of flat or depressed type gastric cancer, more than 20mm in diameter and locating in the gastric body. Macroscopically, we devided them into three groups such as groups A, B and C. In group A, OW was clearly depressed. In group B, OW was clear as the discrimination of color or changes in the area gastricae. In group C, OW was unclear. Endoscopically, OW was clearly reddish or discolored in group A. On the other hand, OW was unclear in group B or C. On these cases, the irregularity or disappearance of capillary transparency was very imporatant to determine the resection line. Dye-spraying contrast tegnique using indigocarmine was useful in group A because it facilitated to recognize the depression. However, it was not so effective in group B or C, because indigocarmine made the recognition of capillary transparency rather difficult.
