Vasc Spec Int.  2019 Jun;35(2):90-94. 10.5758/vsi.2019.35.2.90.

Endovenous Intervention of May-Thurner Syndrome with Thrombus beyond Iliac Vein Stenosis

• Jun H

• KMID: 2455138
• DOI: http://doi.org/10.5758/vsi.2019.35.2.90

Abstract

PURPOSE
With the increase in the incidence of venous thrombosis, interest in May-Thurner syndrome (MTS) accompanying iliac vein compression has increased. Some patients with MTS have inferior vena cava thrombosis or thrombosis beyond iliac vein stenosis (TBIVS). This study aimed to identify the characteristics of MTS with TBIVS including pulmonary embolism (PE) and post-thrombotic syndrome (PTS) compared to those of MTS without TBIVS.
MATERIALS AND METHODS
Thirty-five patients with deep vein thrombosis associated with MTS were treated between March 2012 and February 2016. Demographic data, medical history, computed tomography findings (iliac vein size of stenosis and stenotic ratio compared with the other side), and clinical outcomes (preoperative PE and PTS) were retrospectively collected and reviewed by dividing into groups with or without TBIVS.
RESULTS
Eight of the 35 patients with MTS had TBIVS. The group with TBIVS had a statistically significantly greater iliac vein size (P<0.001) and ratio (P=0.001). PE was more prevalent in the group with TBIVS (63% vs. 15%, P=0.007). However, no statistically significant intergroup difference in PTS prevalence was found.
CONCLUSION
The presence of mild iliac vein stenosis in MTS can be used to predict TBIVS and the requirement for more attention to PE.

Keyword

May-Thurner syndrome; Venous thrombosis; Pulmonary embolism

MeSH Terms

Constriction, Pathologic*
Humans
Iliac Vein*
Incidence
May-Thurner Syndrome*
Prevalence
Pulmonary Embolism
Retrospective Studies
Thrombosis*
Veins
Vena Cava, Inferior
Venous Thrombosis