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我国胃癌发病率居所有恶性肿瘤的首位,每年死于胃癌者达十余万人,占全部恶性肿瘤死亡的23%。其中贲门癌占相当比例,但因其解剖部位特殊,确诊较晚,故疗效常较其他部位的胃癌为差。现在一般认为,贲门癌系指位于胃与食管交界线及其下2cm左右范围内的胃癌。此处有灰白色的食管粘膜(鳞状上皮)与桔红色的胃贲门粘膜(柱状上皮),呈锯齿状衔接,贲门腺的分布大都在交界线下2cm内。有些学者将贲门癌与食管下段癌连在一起,称为下段食管贲门癌。日本
The incidence of gastric cancer in China ranks first in all malignancies. Every year, more than 100,000 people die of gastric cancer, accounting for 23% of all cancer deaths. Among them, cardia cancer accounts for a considerable proportion, but because of its special anatomical parts, the diagnosis is relatively late, so the efficacy is often worse than that of gastric cancer in other parts. It is generally believed that cardia cancer refers to gastric cancer located within a range of about 2 cm below and at the junction of the stomach and esophagus. Here, there are gray esophageal mucosa (squamous epithelium) and orange gastric cardia mucosa (columnar epithelium) that are jagged, and the distribution of cardiac glands is mostly within 2 cm below the junction line. Some scholars associate cardia cancer with lower esophageal cancer and are called lower esophageal and cardiac cancers. Japan