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  • Title: Contemporary outcomes after venography-guided treatment of patients with May-Thurner syndrome.
    Author: Rollo JC, Farley SM, Oskowitz AZ, Woo K, DeRubertis BG.
    Journal: J Vasc Surg Venous Lymphat Disord; 2017 Sep; 5(5):667-676.e1. PubMed ID: 28818219.
    Abstract:
    OBJECTIVE: Patients with May-Thurner syndrome (MTS) present with a spectrum of findings ranging from mild left leg edema to extensive iliofemoral deep venous thrombosis (DVT). Whereas asymptomatic left common iliac vein (LCIV) compression can be seen in a high proportion of normal individuals on axial imaging, the percentage of these persons with symptomatic compression is small, and debate exists about the optimal clinical and diagnostic criteria to treat these lesions in patients with symptomatic venous disease. We evaluated our approach to venography-guided therapy for individuals with symptomatic LCIV compression and report the outcomes. METHODS: All patients with suspected May-Thurner compression of the LCIV between 2008 and 2015 were analyzed retrospectively. Patients with chronic iliocaval lesions not associated with compression of the LCIV were excluded from analysis. Criteria for intervention included LCIV compression in the setting of (1) leg edema/venous claudication with associated venographic findings (collateralization, iliac contrast stagnation, and contralateral cross cross-filling), or (2) left leg deep venous thrombosis. Outcome measures included presenting Clinical, Etiology, Anatomy, Pathophysiology (CEAP) score, postintervention CEAP score, primary patency, and secondary patency. Technical success was defined as successful stent implantation without intraoperative device complications, establishment of in-line central venous flow, and less than 30% residual LCIV stenosis. RESULTS: Of the 63 patients evaluated, 32 (51%) had nonthrombotic MTS and presented with leg edema (100%) or venous claudication (47%). Thirty-one patients (49%) had thrombotic MTS and presented with acute (26%) or chronic (71%) DVT, leg edema (100%), or venous claudication (74%). The mean presenting CEAP score was 3.06 and 3.23 for nonthrombotic and thrombotic MTS, respectively. Forty-four patients (70%) underwent successful intervention with primary stenting (70%) or thrombolysis and stenting (30%); 14 nonthrombotic MTS patients were treated conservatively with compression therapy alone, and 5 thrombotic MTS patients were treated with lysis or angioplasty alone. Clinical improvement and decrease in CEAP score occurred in 95% and 77% of stented patients compared with 58% and 32% of nonstented patients. Complete symptom resolution was achieved in 48% of patients overall, or 64% of stented patients and only 21% of nonstented patients. Complications included two early reocclusions. Primary and secondary 2-year patency rates were 93% and 97% (mean follow-up, 20.3 months) for stented patients. CONCLUSIONS: Venography-guided treatment of MTS is associated with excellent 1-year patency rates and a significant reduction in symptoms and CEAP score. Treating symptomatic MTS patients on the basis of physiologically relevant venographic findings rather than by intravascular ultrasound imaging alone results in excellent long-term patency and clinical outcomes but may result in undertreatment of some patients who could benefit from stent implantation.
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