May-Thurner syndrome: can it be diagnosed by a single MR venography study?

1. Division of Vascular Imaging and Interventions, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA

2. Department of Imaging, Division of Vascular Imaging and Intervention, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA

3. Department of Vascular Imaging and Interventions Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts, USA

4. Division of Vascular Imaging and Intervention, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.

No information available.

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Received Date: 16.04.2012

Accepted Date: 24.05.2012

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ABSTRACT

PURPOSE

We aimed to evaluate the longitudinal stability of left common iliac vein (LCIV) compression by the right common iliac artery on magnetic resonance venography (MRV).

MATERIALS AND METHODS

This retrospective study included 214 patients diagnosed with May-Thurner syndrome by MRV. We identi‘ed a subset of patients who underwent contrast-enhanced cross-sectional imaging of the pelvis six months before or anytime after the MRV and did not undergo any interventional venous procedures between the two studies; 36 patients met these criteria. The degree of venous compression was calculated in both the index and comparison study.

RESULTS

On the index MRV, the mean compression of the LCIV was 62%. However, on the comparis on study in the same patients, the mean compression was 39%. The mean change in degree of compression between the two studies was 23% (P < 0.0001), ranging from a 12% increase to 69% decrease in degree of compression on the comparison study.

CONCLUSION

The compressed LCIV on a single MRV study was not stable over time and thus may be insuf‘cient to diagnose MayThurner syndrome.

May-Thurner syndrome: can it be diagnosed by a single MR venography study?

ABSTRACT

References