Document Detail

The left common iliac artery also compresses the left common iliac vein.
MedLine Citation:
PMID:  21820832     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The higher prevalence of venous disorders in the left lower limb is currently ascribed to compression of the left common iliac vein (LCIV) by the right common iliac artery (RCIA). This study evaluated the occurrence of LCIV compression by the left common iliac artery (LCIA).
METHODS: The anatomy of iliac vessels was evaluated by computed tomography (CT) in 100 asymptomatic individuals. Traditional axial projections, multiple planar, and curved planar reconstructions were used to investigate LCIV morphology.
RESULTS: Compression of the LCIV by the LCIA was found in 20% of participants, whereas compression by the RCIA occurred in 25% and by both iliac arteries in 21%. Axial projections demonstrated a mean reduction in caliber of the LCIV at LCIA crossing of 22.25% (range 0%-90%). Caliber reduction of >20%, 50%, and 70% was observed in 41, 21, and 6 individuals, respectively. The mean LCIV reduction in caliber at RCIA crossing calculated in the axial CT was 24.49% (range, 0%-95%). Caliber reduction of >20%, 50%, and 70%, was observed in 46, 22, and 5 subjects, respectively. Multiple planar reconstructions demonstrated that in contrast to the RCIA, the compressive LCIA determines an eccentric deformation of the vein along its major axis, thus inducing a marked distortion of the lumen that varies from 22 to 37 mm.
CONCLUSIONS: LCIV compression by the LCIA occurs in a relevant number of asymptomatic individuals and compression by the RCIA coexists in about one-half. The patterns of compression by LCIA correlate well with venographic and anatomic findings, which demonstrated damage of the LCIV unrelated to the RCIA crossing. Further investigations are needed to evaluate the hemodynamic and pathophysiologic implications of such compressive relationships. In fact, even if not necessarily associated with chronic venous disorders, LCIV compression by the overlying arteries must be considered a condition "permissive" of future development of chronic congestion or iliofemoral thrombosis.
Alberto Caggiati
Publication Detail:
Type:  Journal Article     Date:  2011-08-06
Journal Detail:
Title:  Journal of vascular surgery     Volume:  54     ISSN:  1097-6809     ISO Abbreviation:  J. Vasc. Surg.     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-02     Completed Date:  2012-01-23     Revised Date:  2012-10-03    
Medline Journal Info:
Nlm Unique ID:  8407742     Medline TA:  J Vasc Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  56S-61S     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Society for Vascular Surgery. Published by Mosby, Inc. All rights reserved.
Department of Anatomy, Sapienza University of Rome, Rome, Italy.
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MeSH Terms
Iliac Artery* / anatomy & histology,  radiography
Iliac Vein* / anatomy & histology,  radiography
Middle Aged
Tomography, X-Ray Computed
Vascular Diseases / complications*,  radiography
Young Adult

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