[Esophagogastroduodenoscopy in the diagnosis of benign nonepithelial tumors of the esophagus, stomach and duodenum].

Benign non-epithelial tumors cannot be detected unless endoscopy is used. When coupled with certain other procedures and biopsy it provides means for detection of these tumors as well as identification of their size, site, type of growth and concomitant complications. Single tumors were found in 156 and multiple ones in 4 cases. During the follow-up study, growth of tumor from 1 to 10 mm was observed in 11 cases only.