The precise etiology is unknown, however, it is thought to occur due to incorrect formation of the foetal vitelline veins 2.
In approximately 50% of patients, PDPV was found incidentally through laparotomy or imaging for other reasons. If patients have symptoms, they are generally pediatric and present with symptoms of duodenal obstruction 4.
On CT with contrast, the main truck of the portal vein is seen tracking anterior to the duodenum.
Treatment and prognosis
Treatment of PDPV induced duodenal obstruction is through bypass surgery, either with gastroduodenostomy or duodenoduodenostomy 5.
- 1. Rosa Díaz, Humberto Lugo-Vicente. Malrotation of the intestine and preduodenal portal vein associated with abdominal situs inversus: A case report. (2019) Puerto Rico Health Sciences Journal.
- 2. D. Pathak, Y. K. Sarin. Congenital duodenal obstruction due to a preduodenal portal vein. (2018) The Indian Journal of Pediatrics. 73 (5): 423. doi:10.1007/BF02758567 - Pubmed
- 3. Shah OJ, Robbani I, Khuroo MS. Preduodenal portal vein with preduodenal common bile duct: an extremely rare anomaly. (2009) American journal of surgery. 197 (4): e43-5. doi:10.1016/j.amjsurg.2008.04.020 - Pubmed
- 4. Ishizaki Y, Tanaka M, Okuyama T. Surgical implications of preduodenal portal vein in the adult. Case report and review of the literature. (1994) Archives of surgery (Chicago, Ill. : 1960). 129 (7): 773-5. Pubmed
- 5. Georgacopulo P, Vigi V. Duodenal obstruction due to a preduodenal portal vein in a newborn. (1980) Journal of pediatric surgery. 15 (3): 339-40. Pubmed