[Pancreatic tumors with endocrine activity in adolescents].

The authors demonstrate three patients--two with a nesidioma of the B-cells with insulin production, the third had a nesidioma made up of non-B cells with clinical manifestations of gastrin hypersecretion. The surgical solution was successful in the patients with B-cell nesiodiomas.

Therapeutic methods of digestive endoscopy in persons of advanced age.

Towards the end of 1988, 85 out of 170 patients indicated for endoscopic papillotomy (EPT) were over 65 years of age, and, of these, 54% were 75 and more. EPT was successful in 90.6% of those over 65.

[Therapeutic methods of digestive tract endoscopy in older persons].

By the end of 1988 of 170 patients indicated for endoscopic papillotomy (EPT) 85 subjects were above 65 years of age and of these 54% were 75 years old or above that age. EPT was successful in 90.6% of subjects above 65 years of age.

Intestinal gradient of enterokinase activity in different species of animals.

The proximodistal gradient of enterokinase activity was studied in mucosal homogenates of the duodenum, jejunum, ileum, caecum (or megacaecum) and sigmoid flexure of various mammals. The study was carried out in groups of 5 monkeys, guinea pigs, dogs and rats and also in gnotobiological rats--conventional (n = 5), germ-free (n = 10) and monocontaminated (n = 5) with Escherichia coli 0 86. Enterokinase activity was likewise determined in duodenal mucosal homogenates prepared from material resected at operation from adult humans (n = 5) and from a group of monkeys (n = 5), with and without the addition of Triton X-100.