[A new view on the problem of nonneoplastic stenosis of the major duodenal papilla. Results of a prospective investigation].

The article contains results of a continuous prospective investigation of the normal course of the major duodenal papilla stenosis in 167 patients. It was revealed that the course of the disease was benign, pain syndrome became inconsiderable in the course of time, the degree of changes in biochemical analysis of blood was not significant. The development of complications (choledocholithiasis, acute pancreatitis, jaundice) was noted in 6-14% of the patients, depending on the presence or absence of GID.

[Gastric carcinoid--modern approaches to diagnosis and treatment].

Gastric carcinoid tumors are rare, but are increasing in incidence. This article reviews what is known about the classification, epidemiology, tumor pathogenesis and management of patients. Additionally we present the results of our own 10-years observation after endoscopic and surgery treatment of this tumors.

[Significance of the operational test parameters in selection of a diagnostic test for Helicobacter infection].

The group of 89 patients was examined, 63 of them suffered by a duodenal ulcerative disease, 11--by gastric ulcerative disease and 15--by chronic gastritis. It was conducted the comparison of the following indices: sensitivity, specificity, relationship of probability and diagnostic efficiency of histological, cytological methods, urease and respiratory tests, method of polymerase chain reaction, qualitative and quantitative definition of antibodies of the class IgG in serum blood to H. pylori by a method of enzyme immunoassay and Western-blot for H.