Duodenal somatostatinoma is a rare cause of upper gastrointestinal bleeding
. We report the case of a 55-yr-old woman who presented with upper gastroin
testinal hemorrhage due to a duodenal somatostatinoma. We discuss the chara
cteristics of these tumors, and review the literature on diagnostic workup
and management. (C) 1999 by Am. Cell. of Gastroenterology.