Góes AMDO, Araújo RDS, Furlaneto IP, Vieira WDB. Compression of left renal vein and left common iliac vein on CT scans: how often are they detected?
J Vasc Bras 2020;
19:e20190121. [PMID:
34178065 PMCID:
PMC8202167 DOI:
10.1590/1677-5449.190121]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Background
The nutcracker and May-Thurner syndromes are rare and, although often
underdiagnosed, they can cause limiting symptoms. They are frequently considered
only after exclusion of other diagnoses and there is no consensus in the
literature on prevalence, incidence, or diagnostic criteria.
Objectives
To estimate the frequency of compression of the left common iliac vein and left
renal vein in CT scans of the abdomen and pelvis.
Methods
Descriptive, quantitative, cross-sectional study. The criteria used to define
compression of the left renal vein were a hilar/aortomesenteric diameter ratio
> 4 and aortomesenteric angle < 39° and the criterion for compression of the
left common iliac vein was a diameter < 4mm.
Results
CT scans of 95 patients were analyzed; 61% were women and 39% were men. Left renal
vein compression was observed in 24.2% of the sample, with a mean age of 48.8
years, occurring in 27.6% of the women and 18.9% of the men (p = 0.3366).
Compression of the left common iliac vein was detected in 15.7% of the sample,
with a mean age of 45.9 years, occurring in 24.1% of the women and 2.7% of the men
(p = 0.0024). Both veins were compressed in 7.4% of the patients.
Conclusions
Left renal vein compression was detected in women and men at similar frequencies,
whereas left common iliac vein compression was more frequent in women. Both venous
compressions were most frequently found in patients aged 41 to 50 years.
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