New methods of endoscopic diagnosis of digestive tract diseases in the Soviet Union.

The development of new methods and apparatus for laparoscopy and investigations of the small and large intestine makes it possible considerably to extend the boundaries of examinations. The method of fistuloscopy makes it possible to obtain more precise information about the branching and presence of cavities which cannot be seen during routine fistulography. The described methods and instruments are a stage on the road towards further improvement of the potentialities of endoscopy.