Preduodenal portal vein causing duodenal obstruction associated with situs inversus, intestinal malrotation, and polysplenia: A case report.

Preduodenal portal vein (PDPV) is a rare anomaly described in only 82 patients in the literature. In a few patients, the PDPV was the direct cause of duodenal obstruction. The authors have treated a newborn with PDPV associated with total situs inversus, intestinal malrotation and polysplenia who presented clinically with duodenal obstruction.