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作者对日本早期胃癌875例中长径在5毫米以下的微小胃癌44例,46个病灶进行了研究。在46个病灶中,隆起型7个(15.2%),平坦型11个(23.9%),陷凹型28个(60.9%),陷凹型占半数以上。小胃癌虽然不合并溃疡性病变,但本文6个病灶伴有溃疡病变(13.0%)。分化癌38个(82.6%),未分化癌8个(17.4%),以分化癌为多。分化癌38个中,微小癌头尾两侧均有肠上皮化生的有29个(76.3%),一侧有化生的5个(13.2%),两侧均无化生的4个(10.5%)。未分化癌8个,分别为
The authors studied 44 cases and 46 lesions of 875 cases of early gastric cancer in Japan with the smallest diameter of 5 mm or less in gastric cancer. Of the 46 lesions, 7 were lumpy (15.2%), 11 were flat (23.9%), 28 were depression (60.9%), and more than half were trapped. Although gastric cancer is not associated with ulcerous lesions, six lesions are associated with ulceration (13.0%). There were 38 (82.6%) differentiated carcinomas and 8 (17.4%) undifferentiated carcinomas, with more differentiated carcinomas. Of the 38 differentiated carcinomas, 29 (76.3%) had metaplasia of the intestinal epithelium on either side of the head and tail of the microcarcinoma, 5 (13.2%) had metaplasia on one side, and 4 had no metaplasia on both sides ( 10.5%). 8 undifferentiated carcinomas, respectively