Related Experiment Video
Updated: Aug 10, 2026

Catheter-based Endovascular Angioplasty for Fibrosing Mediastinitis-associated Pulmonary Vein Stenosis
Published on: August 26, 2025
Brachiocephalic vein confluence stenosis treated by two Wallstents using Y technique
Marek Krzanowski1, Wojciech Bodzoń, Maciej Wandzilak
1Department of Medicine, Jagiellonian University School of Medicine, Cracow, Poland. mmkrzano@cyf-kr.edu.pl
Insights
This case report details a novel technique for treating right brachiocephalic vein stenosis using a Wallstent-in-Wallstent approach. This method successfully restored blood flow, preserving hemodialysis access in the right arm.
Area of Science:
- Vascular Surgery
- Interventional Radiology
- Nephrology
Background:
- Maintaining central vein patency is crucial for the functionality of upper extremity hemodialysis fistulas.
- Stenosis in these central veins can significantly impair dialysis access and patient outcomes.
Observation:
- A case of right brachiocephalic vein (RBCV) stenosis was treated by implanting a Wallstent through a previously placed stent in the left brachiocephalic vein and superior vena cava (SVC).
- This 'stent-in-stent' technique was employed after the left subclavian vein became occluded, rendering the left arm unsuitable for hemodialysis.
Findings:
- Percutaneous transluminal angioplasty (PTA) and Wallstent implantation from the RBCV to the SVC through the existing stent were technically straightforward.
- The procedure successfully restored normal blood flow and alleviated venous congestion in the right arm.
Implications:
- This case demonstrates a potentially effective, albeit unconventional, method for managing complex central venous stenosis when standard approaches fail.
- Further comparative studies are needed to establish optimal stent implantation techniques for large, branching vessels in vascular access.
- This approach may offer a viable solution for preserving hemodialysis access in challenging anatomical scenarios.
Background:
Patency of the central veins is mandatory for proper function of hemodialysis fistula created at the upper extremities.
Case Report:
We present a case of dilatation of right brachiocephalic vein (RBCV) stenosis using a Wallstent implanted through the wall of another Wallstent, which had formerly been inserted into the left brachiocephalic vein and the superior vena cava (SVC). The left subclavian vein was subsequently permanently occluded which rendered the left upper extremity unsuitable for hemodialysis. PTA and implantation of a Wallstent extending from the RBCV to SVC through the wall of the initial stent proved very easy and apparently the only way to restore percutaneously normal flow and relieve congestion of the right arm.
Conclusions:
The optimal method of stent implantation into the large-size, branching vessels remains to be established. A comparative, observational study of various techniques may help to indicate the best approach to the problem.
Related Concept Videos
Venous Thrombosis III: Interprofessional Care
Esophageal Varices-II: Clinical Features and Management
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol abuse, or...
Varicose Veins II: Diagnostic Studies and Interprofessional Care
Esophageal Varices-I: Introduction
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies
