Congenital duodenal obstruction associated with Down's syndrome presenting with hematemesis.

Congenital duodenal obstruction is usually characterized by onset of early vomiting due to high bowel obstruction. Presentation of congenital duodenal obstruction with acute gastrointestinal bleeding is very uncommon. We present an unusual case of congenital intrinsic duodenal obstruction associated with the Down's syndrome presenting with hematemesis secondary to duodenitis. This is a rare presentation of congenital duodenal obstruction associated with Down's syndrome in addition to seven cases previously reported in the English literature.