[Gastrointestinal carcinoid tumors--a retrospective analysis of 12 cases].

Twelve patients operated for gastrointestinal carcinoid tumors are analyzed retrospectively. Clinically four of the cases (33%) were with signs of bowel obstruction, 4 (33%)--with signs of acute appendicitis, 3 (25%)--with signs of gastric outlet obstruction, and one (9%) with a picture of perforative peritonitis. Carcinoid syndrome was observed in two cases (17%).