Article Text

Download PDFPDF
Anomalous drainage of the caudal vena cava into the left atrium and duplication of the posthepatic caudal vena cava in a cat diagnosed with CT
  1. Michelle Lau and
  2. Jennifer Chau
  1. Unit of Diagnostic Imaging, The University of Sydney School of Veterinary Science, Sydney, New South Wales, Australia
  1. Correspondence to Dr Michelle Lau; m.lau{at}


A six-year and six-month-old male neutered British Shorthair cat was referred for investigation of chronic thrombocytopenia and anaemia. On presentation, the cat was dull; however, physical examination was otherwise unremarkable. Complete blood count revealed moderate regenerative anaemia and thrombocytopenia. Serum biochemistry revealed hyperglycaemia. Thoracic radiographs showed two soft tissue opaque masses in the right cranial to mid thorax and in the left caudal lung lobe. CT revealed a multicameral soft tissue attenuating mass in the right cranial and middle lung lobes and an abnormal region of soft tissue attenuation in the left caudal lung lobe. It also revealed anomalous drainage of the caudal vena cava into the left atrium, generalised pulmonary vascular congestion, duplication of the posthepatic caudal vena cava and a suspect gastrophrenic portosystemic shunt.

  • computed tomography (CT)
  • cats
  • cardiovascular disease
  • congenital heart disease
  • imaging
View Full Text

Statistics from


  • Contributors ML and JC have both significantly contributed to writing and editing this case report.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Data availability statement All data relevant to the study are included in the article.

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.