tandem occlusion
Simultaneous occlusion of two vessel segments in series, typically involving cervical carotid stenosis with intracranial large vessel occlusion.
Full Definition
Tandem occlusion refers to the simultaneous presence of significant stenosis or occlusion at two points along the same vascular pathway, most commonly involving severe cervical internal carotid artery stenosis or occlusion combined with acute intracranial large vessel occlusion. This complex scenario presents unique therapeutic challenges, as it requires addressing both lesions to achieve optimal reperfusion. Treatment strategies may include staged procedures, simultaneous intervention, or selective treatment based on individual patient factors and institutional protocols. The presence of tandem lesions often complicates acute stroke management and may influence device selection, access routes, and procedural timing.
Usage
Usage note: Specify anatomical locations of both lesions; distinguish from separate vessel involvement.
In Context
- "CT angiography revealed tandem occlusion with 90% carotid stenosis and M1 middle cerebral artery occlusion." — Stroke imaging report
- "Management of tandem occlusion required carotid stenting followed by mechanical thrombectomy of the intracranial clot." — Neurointerventional procedure note