[Primary tumors of the duodenum and the small intestine in our clinical study subjects over a ten-year period].

The authors are evaluating occurrence of primary tumors of duodenum and small intestine during last 10 years (1995-2004) as a retrospective study. 13 patients were operated in this period, three of them are presented as case reports. The main clinical symptoms were bleeding and obstruction, two patients had no symptoms. To define the preoperative diagnosis of this kind of tumors is difficult and needs an essential combination of exams.