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

## TL;DR

This study shows that self-expanding metal stents can safely and effectively treat biliary blockages in dogs and cats, improving their health and survival.

## Contribution

The study provides the first detailed clinical evaluation of SEMS in dogs and cats for EHBO.

## Key findings

- All 13 animals showed improvement in clinical signs and bilirubin levels after SEMS placement.
- No significant complications were observed during or after the procedure.
- 12 out of 13 animals survived and had no major issues during follow-up.

## Abstract

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.

This retrospective study included 11 client‐owned dogs and 2 client‐owned cats that underwent biliary SEMS placement. Medical records were reviewed.

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.

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.

Extrahepatic biliary obstruction in dogs and cats is life‐threatening. Biliary self‐expandable metal stents (SEMS) provide a minimally invasive treatment, effectively relieving the obstruction with fewer complications. SEMS offers the potential for long‐term or permanent relief, significantly improving outcomes and quality of life in affected animals.