Early Phases and Diagnostic Features

摘要: ALTHOUGH the frequency of gastric cancer is decreasing yearly in western countries, it prevails countries such as Chile, Ireland, and Japan. Most cancers diagnosed by routine roentgenologic examinations are advanced, life-saving surgery, radiotherapy, or chemotherapy hardly expected for them. Recent statistical studies show that five-year survival rate patients on whom surgical resection was performed less than 40%, while with early more 95%. These data strongly emphasize detection can only improve present poor state cure from this disease. 45 Early cancer, which defined Japan mucosal submucosal be classified into following three types gross appearances: I, protruded; II, superficial; III, ulcerated. The protruded type includes sessile pedunculated polyps malignant transformation polypoid cancer. superficial