# Pathological evaluation of a fluoropolymer-based drug-eluting stent in an arteriovenous graft outflow venous stenosis

## TL;DR

A drug-eluting stent made of fluoropolymer was implanted in a vein graft, and after two and a half years, it was removed and examined.

## Contribution

The study provides pathological insights into the long-term performance of a fluoropolymer-based drug-eluting stent in venous stenosis.

## Key findings

- The stent struts showed partial endothelial cell coverage.
- The remaining stent surface was mostly covered by fibrin.
- No restenosis or aneurysmal changes were observed.

## Abstract

A fluoropolymer-based drug-eluting stent was implanted in an arteriovenous graft outflow venous stenosis. Two and a half years later, due to a local infection, the stent was removed surgically, and a pathological evaluation was conducted. The stent struts exhibited partial endothelial cell coverage, with the remaining surface predominantly covered by fibrin. Notably, there was no evidence of restenosis or aneurysmal change.