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Case Reports
. 2022 Oct;17(4):259-261.
doi: 10.2185/jrm.2022-009. Epub 2022 Oct 22.

Anomalous duplication of the portal vein with prepancreatic postduodenal portal vein

Sho Kitagawa  1
Affiliations
Case Reports

Anomalous duplication of the portal vein with prepancreatic postduodenal portal vein

Sho Kitagawa. J Rural Med. 2022 Oct.

Abstract

Objective: We report a case of unusual anomalous duplication of the portal vein. Patient: A 40-year-old man with portal vein duplication. One portal vein is derived from the superior mesenteric vein and splenic vein and enters the caudate lobe of the liver. Another portal vein, known as the prepancreatic postduodenal portal vein, is derived from the superior mesenteric vein and courses anterior to the pancreas and posterior to the duodenum. Conclusion: Duplication of the portal vein is an extremely rare developmental anomaly, and in previous reports, the superior mesenteric and splenic veins entered the liver separately. We present a previously unreported case of anomalous duplication of the portal vein, one of which was the prepancreatic postduodenal portal vein.

Keywords: anatomic variant; duplication of the portal vein; portal vein; prepancreatic postduodenal portal vein.

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Figures

Figure 1
Figure 1
Contrast-enhanced computed tomography showing an enlarged caudate lobe of the liver (A, arrowheads), duplication of the portal vein (A, arrows), and prepancreatic postduodenal portal vein (B, arrow).
Figure 2
Figure 2
Coronal volume-rendered images showing that one portal vein is formed from the superior mesenteric vein and splenic vein (A) and that another portal vein (prepancreatic postduodenal portal vein) derives from the superior mesenteric vein (B).
See this image and copyright information in PMC

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