Preduodenal Portal Vein Associated with Duodenal Obstruction of other Etiology: A Case Series.

DuodenalPreduodenal portal vein is a rare and interesting entity which often causes duodenal obstruction. It is also associated with other congenital anomalies. We report here three cases of preduodenal portal vein associated with other anomalies causing duodenal obstruction not related to direct compression by portal vein itself.