A rare congenital extrahepatic portosystemic shunt affecting the inferior mesenteric vein, inferior vena cava, and left ovarian vein

Purpose To observe a case of congenital extrahepatic portosystemic shunt and discuss it from the embryological and clinical viewpoints. Methods An 85-year-old female cadaver was employed for a dissection course at Aichi Medical University in 2009. Results There was no evidence of liver cirrhosis mac...

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Bibliographic Details
Published in:Surgical and radiologic anatomy (English ed.) 2014-09, Vol.36 (7), p.729-732
Main Authors: Takeuchi, Hajime, Takeda, Yoko, Takahashi, Miyo, Hayashi, Shogo, Fukuzawa, Yoshitaka, Nakano, Takashi
Format: Article
Language:English
Subjects:
Aged, 80 and over
Anatomic Variations
Anatomy
Anatomy & physiology
Biological variation
Cadaver
Dissection
Female
Humans
Imaging
Liver
Medicine
Medicine & Public Health
Mesenteric Veins - abnormalities
Orthopedics
Ovary - blood supply
Portal Vein - abnormalities
Radiology
Surgery
Vascular Malformations - diagnosis
Veins & arteries
Vena Cava, Inferior - abnormalities
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Summary:Purpose To observe a case of congenital extrahepatic portosystemic shunt and discuss it from the embryological and clinical viewpoints. Methods An 85-year-old female cadaver was employed for a dissection course at Aichi Medical University in 2009. Results There was no evidence of liver cirrhosis macroscopically or microscopically. A portosystemic shunt was observed that involved communication between the inferior mesenteric vein, inferior vena cava (IVC), and left ovarian vein by a single Y-shaped shunt vessel. Conclusions To the best of our knowledge, this is the first reported case of the above-mentioned three veins being connected by a single Y-shaped shunt vessel. Considering the other venous diameters, the shunt appeared to flow into the splenic vein and IVC. It cannot be denied that this shunt may have led to hepatic encephalopathy, although the shunt effect may have been minimal. Embryological development of IVC appears to occur close to the plexus of anastomosing vitelline veins, forming the portal vein.
ISSN:0930-1038
1279-8517
DOI:10.1007/s00276-013-1230-1