Diameter of the shunt vessel in dogs with incidental extrahepatic portosystemic shunts

Toshiyuki Tanaka; Yusuke Wada; Mizuki Tomihari; Hidetaka Nishida; Hideo Akiyoshi

doi:10.1111/ahe.12931

Diameter of the shunt vessel in dogs with incidental extrahepatic portosystemic shunts

Anat Histol Embryol. 2023 Sep;52(5):815-820. doi: 10.1111/ahe.12931. Epub 2023 May 12.

Authors

Toshiyuki Tanaka^{1

2}, Yusuke Wada³, Mizuki Tomihari⁴, Hidetaka Nishida¹, Hideo Akiyoshi¹

Affiliations

¹ Laboratory of Veterinary Surgery, School of Veterinary Science, Osaka Metropolitan University, Osaka, Japan.
² Kinki Animal Medical Training Institute & Veterinary Clinic, Osaka, Japan.
³ Veterinary Medical Center, School of Veterinary Science, Osaka Metropolitan University, Osaka, Japan.
⁴ Laboratory of Veterinary Advanced Diagnosis and Treatment, School of Veterinary Science, Osaka Metropolitan University, Osaka, Japan.

PMID: 37173857
DOI: 10.1111/ahe.12931

Abstract

Clinical signs of extrahepatic portosystemic shunts (EHPSS) depend on the amount of blood shunted. In this study, dogs with EHPSS without noticeable clinical signs including 34 left gastro-phrenic, 3 left gastro-azygos and 2 left spleno-gonadal shunts were evaluated. In dogs with EHPSS without noticeable clinical signs, the median maximum diameter of the shunt vessel was significantly smaller compared to PV (p < 0.005). Whenever the diameter of the EHPSS is small in relation to the diameter of the PV, it seems likely that no obvious clinical signs of EHPSS are observed by the owners.

Keywords: CT; extrahepatic portosystemic shunt; left gastro-azygos shunt; left gastro-phrenic shunt; left spleno-gonadal shunt; liver volume.

MeSH terms

Animals
Dog Diseases* / surgery
Dogs
Portal System / surgery
Portasystemic Shunt, Transjugular Intrahepatic* / veterinary
Retrospective Studies
Stomach