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目的：探讨胃癌的年龄、性别、部位、大体形态、组织学类型等分布特征。方法：对我院近20年通过纤维胃镜诊断的胃癌804例进行分析。结果：胃癌多见于中老年，男女之比2．85：1，胃窦部最多见（32％），分型以溃疡型最多（47．5％），组织学类型以低分化腺癌为主（48．6％），随年龄增长，胃癌发病率、男女之比、贲门癌发生率和分化型腺癌比例逐渐升高，而胃窦癌发生率和恶性程度高的癌比例逐渐降低，早期胃癌占3％。结论：胃癌以中老年多见，男性多于女性，好发于胃窦部，形成以溃疡型最多，组织学类型以低分化腺癌为主，早期胃癌检出率低。
Objective: To explore the distribution characteristics of gastric cancer such as age, sex, location, general morphology, and histological type. Methods: 804 cases of gastric cancer diagnosed by fiberoptic gastroscopy in our hospital during the past 20 years were analyzed. Results: Gastric cancer was more common in middle-aged and older people, the ratio of male to female was 2.85:1, the most common was in gastric antrum (32%), and the most common type was ulcer (47.5%). The histological type was poorly differentiated adenocarcinoma. (48.6%), with the increase of age, the incidence of gastric cancer, the ratio of men and women, the incidence of cardia cancer, and the proportion of differentiated adenocarcinomas gradually increased, while the proportion of cancers with high incidence and malignancy of gastric antrum cancer gradually decreased. Gastric cancer accounts for 3%. Conclusions: Gastric cancer is more common in middle-aged and older people, with more men than women. It occurs in the antrum of the antrum. The most common type of ulceration is ulceration. The histological type is mainly poorly differentiated adenocarcinoma. The early detection rate of gastric cancer is low.