[Morphological characteristics of early stomach cancer (analysis of 150 cases)].

One hundred and fifty early carcinomas of the stomach were studied. Morphology of 5 anatomic types (polypoid, raised, flat, superficial ulceration, ulcerative) corresponding to endoscopic types of early carcinoma is described. Previous diseases, age and sex of patients were found to influence the macroscopic and histological structure of the tumour, the rate of invasion of the submucosa. Therefore, the authors distinguish a) early carcinoma in the presence of polyps or chronic gastritis and b) carcinoma in the presence of peptic ulcer. The latter comprises nearly 80% of all early carcinomas. Three zones where the tumor arises were found: angle of the stomach, pyloric fold, and the border between the esophagus and stomach. Various forms of carcinoma have different rates of affection of each of these zones.