Duodenal Hemangioma as a Rare Cause of Gastrointestinal Bleeding: A Case Report and Literature Review.

Duodenal hemangiomas are benign vascular tumors caused by haphazard vascular proliferation within the duodenal wall. Although rare, duodenal hemangiomas could lead to rapidly progressive life-threatening gastrointestinal (GI) bleeding that requires urgent intervention. The diagnosis of duodenal hemangioma often requires direct visualization of the lesion either endoscopically or surgically, as well as histopathological examination.