CT: Extrahepatic Portosystemic Shunt in a 2-year-old FS Chihuahua :Our Case Of the Month August 2015

Case Of the Month

CT: Extrahepatic Portosystemic Shunt in a 2-year-old FS Chihuahua :Our Case Of the Month August 2015

Presented for Fanconi-like clinical signs. Ultrasound revealed possible liver shunt. Physical exam was unremarkable.

Presented for Fanconi-like clinical signs. Ultrasound revealed possible liver shunt. Physical exam was unremarkable.

DX

Large solitary extrahepatic portosystemic shunt.

Outcome

Recommend surgical attenuation of the shunt vessel as clinically indicated.

Image Interpretation

CT, portal angiogram: A large tortuous vessel is seen connecting the portal vein to the caudal vena cava. This is an aberrant vessel which increases the diameter of the caudal vena cava more than two-fold. Shunt vessel measures approximately 6.3 mm at its widest point, approximately the same diameter as the caudal vena cava going through the diaphragm. There is no evidence of urolithiasis. There is no evidence of pleural free fluid. There is no evidence of intrathoracic abnormalities.

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