false lumen thrombosis
Complete or partial clotting of blood within the false channel of an aortic dissection.
Full Definition
False lumen thrombosis occurs when blood within the false channel of an aortic dissection becomes clotted, either completely or partially. This phenomenon is particularly relevant in type B aortic dissections where complete false lumen thrombosis is generally associated with favorable outcomes and reduced risk of aneurysmal degeneration. Partial thrombosis, however, may indicate ongoing perfusion and potential for continued false lumen expansion. The degree of thrombosis influences treatment decisions and long-term surveillance strategies.
Usage
Usage note: Specify complete vs. partial thrombosis and anatomical extent; often abbreviated as FL thrombosis in imaging reports.
In Context
- "Follow-up CT angiography demonstrated complete false lumen thrombosis throughout the descending thoracic aorta." — radiology report
- "The patient's chronic type B dissection showed partial false lumen thrombosis with persistent flow in the abdominal segments." — vascular surgery consultation