[Differential diagnosis of ulcerated forms of early cancer of the stomach].

An analysis of roentgenological and endoscopic signs of "malignancy" in 107 patients with "ulcerous" forms of early gastric cancer and symptoms in patients of the control group (54 patients) with chronic gastric ulcer was performed by the same specialists. These signs were shown to be not reliable. It was only the biopsy, sometimes repeated, followed by cytological and histological examinations of the material, which managed to make a surely correct preoperative diagnosis in 94.4% of patients with the early stage of gastric cancer.