Fig. 5From: Evaluation of venous pathology of the lower extremities with triggered angiography non-contrast-enhanced magnetic resonance imagingTRANCE-MRV showing interruption of the left common iliac vein and May-Thurner syndrome, (a) TRANCE-MRV showed that many subjects had equivocal interruption of the left common iliac vein (CIV), but no venous thrombosis, collateral vessels or related symptoms. This may be because the left CIV is located between the right common iliac artery (CIA) and the spine, which is an anatomically relatively narrow location. b-d May-Thurner syndrome in a patient with recurrent DVT in the left leg. b MRV shows interruption of the left CIV and DVT of left femoral vein. c, d MRV and MRA show compression of the left CIV against the lumbar vertebrae by the overlying right CIABack to article page