Gallbladder carcinoma - a rare cause of pyloric-duodenal stenosis.

Pyloric duodenal stenosis is usually caused by pyloric, juxtapyloric or duodenal ulcer, or by postbulbar ulcer. Gallbladder cancer (GBC), duodenal diverticula, annular pancreas and superior mesenteric artery syndrome (Wilkie's syndrome) are rare causes of pyloric duodenal stenosis. The case of a 66-year-old female patient is presented.

Nature and prevalence of risk factors associated to type B and C acute viral hepatitis cases in Bucharest, 1998-2000.

The main objective of the study was to calculate and report the prevalence of probable risk factors involved in the transmission of pathogenic agents among type B and C acute viral hepatitis cases confirmed in Bucharest (1998-2000). The standardized values of the risks detected in the 45-180 days preceding the onset of illness suggest that in both types of acute viral hepatitis considered in our study transmission associated to the individuals' behaviour (19.0%-hepatitis B and 20.

Antidiphtheria and antitetanus immunity in various age groups (0-70 yrs) in Romania.

The evaluation of the antidiphtheria and antitetanus immunity level is still a topical question. The paper approaches the study of antidiphtheria and antitetanus immunity on age groups in 3,768 and, respectively, 4,001 subjects. In the studied population, the results of estimating immunity revealed an antidiphtheria percentage of 87.