4 rezultatima
OBJECTIVE
Gastrinomas are the most common neuroendocrine tumors of the duodenopancreatic region. Surgical resection is the primary type of radical treatment.
METHODS
At the Institute of General, Gastrointestinal and Breast Surgery we treated a patient with a duodenal gastrinoma that was diagnosed
Secretin is a gastrointestinal hormone that stimulates insulin secretion and enhances the insulin response to glucose. The mechanism by which secretin acts on the beta-cell has not been extensively studied. The plasma insulin responses to secretin (2 U/kg), expressed as the percent increase relative
Ultrasonographic imaging was performed on 49 patients who had pancreatic islet cell tumors, including examples of all six known tumor varieties. In beta cell insulinomas, ultrasonography was of little value for tumor visualization, because these tumors tend to be small and the patients frequently
METHODS
A 41-year-old obese patient presented with cramp-like abdominal pain, watery diarrhoea with partly digested food particles, projectile vomiting and newly diagnosed diabetes mellitus. For the preceding 6 years he had been treated for recurrent gastric and duodenal ulcers. Although the fasting