[Clinical endoscopic criteria of the early forms of esophageal cancer].

An analysis is given of the clinico-endoscopic findings in 1389 patients with esophageal cancer, in 27 of them an early form of cancer was noted. Fibroesophagoscopy is of special importance for early diagnosis of esophageal cancer. Visual examination of the mucous membrane associated with the possibility to obtain the material for histological and cytologic assays makes the technic concerned indispensable for solving the diagnostic difficulties involved.