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Updated: Jun 16, 2026

Point-Of-Care Ultrasound Screening for Proximal Lower Extremity Deep Venous Thrombosis
Published on: February 10, 2023
Computed tomography findings in pseudothrombosis of the iliofemoral vein
Gaurav Desai1, Liina Poder, Zhen J Wang
1Department of Radiology, University of California, San Francisco, CA 94143-0628, USA.
Abstract:
Computed tomography findings in 3 patients with apparent thrombosis of an iliofemoral vein due to mixing artifact related to venous collateral formation are presented, 1 with portosystemic collaterals and 2 with collaterals secondary to subclavian vein thrombosis. Mixing artifact or asymmetric enhancement related to collateral formation should be considered for an apparent thrombus in the iliofemoral vein. Examination of axial and reformatted images may facilitate recognition and help avoid an erroneous diagnosis of deep venous thrombosis.
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