[Experience in the work with illuminator compressors for flexible endoscopes].

Question related to the influence of the compressor height on the efficiency of the medical pneumohydraulic soft endoscopes was considered. It was stated that geometrical pressure on the system's branch input for forwarding air/water is essentially increased with the increase of distance from the floor to the light source, where the system's compressor is located. In the described version the pressure is increased by 25 per cent, which increase the efficiency of the mentioned above system.

[Tasks and methods for the more precise diagnosis of malignant tumors].

Major goals and principles of stage-by-stage diagnosis of malignant tumors are formulated. Application of different diagnostic procedures carried out at the preoperative (pre-treatment), intraoperative and postoperative stages of clinical treatment are discussed.

[Endoscopic diagnosis of postoperative stomach cancer].

The authors examined endoscopically the esophagus and stomach in 309 patients, previously operated upon for gastric cancer (258), ulcer of the stomach or duodenum (36) and benign gastric tumors (15). They estimated the value of this method for establishing diagnosis of the operated stomach cancer and also the importance of histological and cytological methods in the complex diagnosis of this pathology. Moreover, roentgeno-endoscopic correlations were made.