[Evaluation of the potentials of large-frame fluorography in detecting stomach cancer and precancerous diseases in prophylactic examinations].

A comparative evaluation of the results of mass gastro-fluorographic screenings with the aid of special-purpose gastrofluorographs and pulmonary fluorographs adapted for stomach examination in lateral position. Although stomach radiograms obtained by use of pulmonary fluorography installations provide less information, the latter prove to be a good substitute in carrying out mass screenings for stomach tumors, when special-purpose gastrofluorographs are not available. Stomach cancer incidence in out-patients with stomach diseases is 7 times that in subjects who have no complaints, and 2-4 times in patients with stomach disturbances unregistered at dispensary clinics.