[Suitability of fiberscopy of the upper respiratory tracts during esophagogastroduodenoscopy and bronchoscopy].

Prophylactic fibroscopic examination of the upper respiratory tract was carried out in 1,201 patients, 1,038 of them being simultaneously subjected to fiber esophagogastroduodenoscopy and 163--to fiber bronchoscopy. Specimens for cytomorphologic examination were taken from 393 cases. In 18.2%, various pathology of the upper respiratory tract was found, including inflammation in 9.7%. The group at high risk for cancer included 2.9% of examinees. Malignancies were detected in 0.08%.