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Anomalous branching pattern of the portal vein: right posterior portal vein originating from the left portal vein

  • Anatomic Variations
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Abstract

Purpose

To introduce a rare variant branching pattern of the portal vein with clinical relevance.

Methods

A 55-year-old man was examined by contrast-enhanced computed tomography to investigate the cause of fever and mildly elevated hepatic enzyme levels.

Results

Based on computed tomography, liver abscesses were identified which may have caused the fever and elevated hepatic enzyme levels. And a variation in the branching pattern of the portal vein was also detected in this patient, which has not been reported previously; the right posterior portal vein originated from the end of the horizontal part of the left portal vein. Identification of this rare branching pattern of the portal vein prior to hepatectomy, liver transplantation, and portal vein embolization is considered important to prevent complications.

Conclusions

A rare variant in which the right posterior portal vein originated from the left portal vein was identified. Recognition of this variant may be important prior to surgical or interventional radiological strategies.

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Correspondence to Koichiro Yasaka.

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Yasaka, K., Akai, H. & Kiryu, S. Anomalous branching pattern of the portal vein: right posterior portal vein originating from the left portal vein. Surg Radiol Anat 39, 573–576 (2017). https://doi.org/10.1007/s00276-016-1751-5

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  • DOI: https://doi.org/10.1007/s00276-016-1751-5

Keywords

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  1. Shigeru Kiryu