title: Down syndrome with congenital duodenal stenosis and annular pancreas presenting as hematemesis: a case report.
mesh_terms: D004314:Down Syndrome / Q000150:complications*; D004380:Duodenal Obstruction / Q000151:congenital*; D006396:Hematemesis / Q000209:etiology*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D010179:Pancreas / Q000002:abnormalities*