Magnetic resonance direct thrombus imaging differentiates acute recurrent ipsilateral deep vein thrombosis from residual thrombosis

• Published in: Blood 2014-07, Vol.124 (4), p.623-627
• Main Authors: Tan, Melanie, Mol, Gerben C., van Rooden, Cornelis J., Klok, Frederikus A., Westerbeek, Robin E., Iglesias del Sol, Antonio, van de Ree, Marcel A., de Roos, Albert, Huisman, Menno V.
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; Aged; Female; Humans; Leg - blood supply; Magnetic Resonance Imaging - methods; Male; Middle Aged; Prognosis; Prospective Studies; Recurrence; Thrombosis - classification; Thrombosis - pathology; Veins - pathology; Young Adult
• ISSN: 0006-4971; 1528-0020
• DOI: 10.1182/blood-2014-04-566380

Accurate diagnostic assessment of suspected ipsilateral recurrent deep vein thrombosis (DVT) is a major clinical challenge because differentiating between acute recurrent thrombosis and residual thrombosis is difficult with compression ultrasonography (CUS). We evaluated noninvasive magnetic resonance direct thrombus imaging (MRDTI) in a prospective study of 39 patients with symptomatic recurrent ipsilateral DVT (incompressibility of a different proximal venous segment than at the prior DVT) and 42 asymptomatic patients with at least 6-month-old chronic residual thrombi and normal D-dimer levels. All patients were subjected to MRDTI. MRDTI images were judged by 2 independent radiologists blinded for the presence of acute DVT and a third in case of disagreement. The sensitivity, specificity, and interobserver reliability of MRDTI were determined. MRDTI demonstrated acute recurrent ipsilateral DVT in 37 of 39 patients and was normal in all 42 patients without symptomatic recurrent disease for a sensitivity of 95% (95% CI, 83% to 99%) and a specificity of 100% (95% CI, 92% to 100%). Interobserver agreement was excellent (κ = 0.98). MRDTI images were adequate for interpretation in 95% of the cases. MRDTI is a sensitive and reproducible method for distinguishing acute ipsilateral recurrent DVT from 6-month-old chronic residual thrombi in the leg veins. •Diagnostic management of ipsilateral recurrent DVT of the leg is complicated because residual DVT is common and mimics acute DVT on CUS.•MRDTI is able to reproducibly distinguish acute ipsilateral recurrent DVT from 6-month-old chronic residual thrombi in the leg veins.