Application of Self-Expandable Metal Stent in Dogs and Cats for the Management of Extrahepatic Biliary Obstruction: 13 Cases (2021-2024).

Abstract

OBJECTIVES: To describe the clinical characteristics of 11 dogs and 2 cats with extrahepatic biliary obstruction (EHBO) who underwent self-expandable metal stent (SEMS) placement. We also examined the indications for the procedure and evaluated its outcomes. Lastly, we identified risk factors associated with survival in these animals. METHODS: This retrospective study included 11 client-owned dogs and 2 client-owned cats that underwent biliary SEMS placement. Medical records were reviewed. RESULTS: The average age of the animals was 9.3 years (range, 6-15). The majority of animals had at least one clinical sign associated with EHBO. Frequently appearing clinical signs were inappetence, lethargy and jaundice. No complications were found related to the stenting procedure. Clinical signs and serum total bilirubin concentration improved postoperatively in all 13 animals. The 12 animals (92.3%) that survived until discharge were followed up to 2 years postoperatively, during which time no significant complications were observed. CLINICAL SIGNIFICANCE: Biliary SEMS placement may be considered as a treatment option for dogs and cats with EHBO, with minor complications and potential for permanent treatment of EHBO.