Related Experiment Video
Updated: Oct 9, 2025

Catheter-based Endovascular Angioplasty for Fibrosing Mediastinitis-associated Pulmonary Vein Stenosis
Published on: August 26, 2025
"Half-uncovered technique" to secure larger stents for postoperative pulmonary vein stenosis
Hiroaki Kise1, Takanari Fujii1, Hideshi Tomita1
1Pediatric Heart Disease and Adult Congenital Heart Disease Center, Showa University, Tokyo, Japan.
Abstract:
Although larger stent placement could be effective for pulmonary vein stenosis, stents extrusion tends to occur due to caliber narrowing, small landing area, and the slippery nature. We placed stents with diameter ≧8 mm for four stenotic lesions using the "half-uncovered technique". All stents were precisely placed and successfully resolved the stenosis. This technique allows us to avoid extrusion and to perform safe and effective dilatation when placing larger stents for pulmonary vein stenosis.

