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1861年,Rokitansky报道了幽门环是胃癌向远端侵犯难以逾越的屏障。这被认为是胃癌扩散方式的传统观点。一般认为,十二指肠有无受累可用于区别胃癌和淋巴瘤。胃癌侵及十二指肠的发生率为9％～69％,此为手术及尸检后镜下观察十二指肠获得的。而放射学检查中发生率仅为5％～15％。作者回顾了十年来利用钡剂造影研究揭示的胃腺癌和淋巴瘤越过幽门扩散的相对发生率。共收集了127例病例,其中102例为胃癌,25例为淋巴瘤,均经手术病理
In 1861, Rokitansky reported that the pyloric ring is an insurmountable barrier to distal invasion of gastric cancer. This is considered to be the traditional view of the spread of gastric cancer. It is generally believed that the presence or absence of involvement of the duodenum can be used to distinguish between gastric cancer and lymphoma. The incidence of gastric cancer invading the duodenum was 9% to 69%, which was obtained by observing the duodenum under operation and autopsy. The incidence of radiological examination was only 5% to 15%. The authors reviewed the relative incidence of gastric adenocarcinomas and lymphomas across the pyloric spread revealed by a barium contrast study over the past decade. A total of 127 cases were collected, including 102 cases of gastric cancer and 25 cases of lymphoma, all undergoing surgical pathology.