Preduodenal portal vein—A cause of intestinal obstruction?

Congenital duodenal obstruction: causes and imaging approach

“…While present in 3-5% of children with congenital duodenal obstruction, the preduodenal portal vein is almost always an incidental finding and is rarely the cause of obstruction [1,5]. Fewer than two dozen cases of preduodenal portal vein have been reported in the literature where the vein itself has been confidently ascribed as the cause of the obstruction [43,[45][46][47][48][49][50][51][52]. Preduodenal portal vein is rarely an isolated anomaly, and symptomatic children usually present with manifestations of other malformations, including malrotation with Ladd bands, duodenal atresia, biliary atresia and cardiac defects [43,46,47,51].…”

A So-Called Carcinosarcoma of the Gallbladder in a Patient with Multiple Anomalies. A Case Report.

“…Esscher [10] reviewed 52 cases of PDPV which had been reported from 1979 to 1988. The embryo-ed to complicate PDPV, namely, annular pancreas, biliary atresia, preduodenal common bile duct, malrotation and cardiovascular malformations.…”

Polysplenia Syndrome with Various Visceral Anomalies in an Adult: Embryological and Clinical Considerations.

“…Clinically, PPV is an anomaly of considerable surgical importance (22,23). It is unlikely that PPV itself could cause duodenal obstruction because it is a thin-wall, low-pressure vessel (24). Polysplenia syndrome has been considered to be a rare congenital anomaly.…”