Successful outside-the-stent stenting for in-stent chronic total occlusion in the common iliac artery

Area of Science:

• Vascular Surgery
• Interventional Cardiology
• Endovascular Interventions

Background:

• Endovascular therapy with stenting provides durable clinical benefits for aorto-iliac occlusive disease.
• In-stent restenosis is typically manageable, but challenging cases of total occlusion can occur within previously stented common iliac arteries (CIAs).

Observation:

• An uncommon case presented with failed reconstitution of an in-stent total occlusion in the common iliac artery.
• Standard guidewire techniques were unsuccessful in crossing the occluded segment within the existing stent.

Findings:

• A novel strategy involved implanting a nitinol stent outside the occluded segment, effectively bypassing the in-stent total occlusion.
• This approach achieved good vessel patency, maintained for 14 months post-procedure.

Implications:

• Nitinol stent implantation outside an in-stent occlusion offers a viable solution for complex CIA occlusions where standard methods fail.
• This technique represents a novel approach to restoring vessel patency in challenging endovascular scenarios.