aortic uncrossable lesion
An aortic pathology that cannot be traversed with standard endovascular equipment. Typically refers to completely occluded or severely stenotic segments that prevent wire advancement.
Full Definition
An aortic uncrossable lesion refers to a pathological condition in the aorta that cannot be successfully crossed with guidewires, catheters, or other endovascular devices using standard techniques. This situation commonly arises in cases of complete aortic occlusion, severe coarctation, or complex dissection anatomy where the true lumen cannot be accessed. Uncrossable lesions represent a significant technical challenge in endovascular aortic interventions and may necessitate alternative approaches such as surgical exposure, specialized reentry devices, or hybrid procedures. The designation has important implications for procedure planning and patient counseling regarding treatment options.
Usage
Usage note: Distinguish from 'difficult-to-cross' which implies eventual success with persistence or specialized techniques.
In Context
- "The chronic total occlusion proved to be an uncrossable lesion, requiring surgical intervention." — Interventional procedure report
- "Multiple reentry devices failed to overcome the uncrossable lesion in the thoracic aorta." — Case discussion