contrast extravasation
Pronunciation: ik-strav-uh-SAY-shun
Leakage of contrast material outside the vascular lumen, indicating vessel wall injury or perforation.
Full Definition
Contrast extravasation refers to the abnormal leakage of contrast material outside the confines of the blood vessel lumen, typically indicating vessel wall damage, perforation, or rupture. This finding can be observed during angiographic procedures as contrast pooling outside the expected vascular contours. Extravasation may result from procedural complications such as vessel perforation during catheterization, aggressive balloon inflation, or underlying pathology such as vessel wall weakness. Recognition of contrast extravasation is critical as it may indicate serious complications requiring immediate intervention. The pattern and extent of extravasation can help determine the severity and appropriate management approach.
Usage
Usage note: Always indicates abnormal finding requiring immediate attention and documentation.
In Context
- "Immediate contrast extravasation was noted following balloon inflation, suggesting vessel perforation." — Complication report
- "The angiogram demonstrated contained contrast extravasation consistent with a pseudoaneurysm." — Diagnostic imaging report