AI Article Synopsis
- The study aimed to identify and categorize iliac venous variations using multidetector computed tomography (MDCT) in a large sample of patients.
- The analysis of 2,488 patients revealed a 20.9% prevalence of these variations, classifying them into eight distinct types, with the majority being normal.
- No significant difference in occurrence rates was observed between genders, indicating that iliac venous variations are common anatomical features found in both men and women.
Article Abstract
Purpose: To determine the prevalence of iliac venous variations and to classify the variations using multidetector computed tomography (MDCT).
Materials And Methods: MDCT images of 2,488 patients were retrospectively reviewed. Iliac venous variations were documented and classified with regard to internal iliac vein (IIV) drainage patterns, the presence of interiliac communicating veins and inferior vena cava (IVC) anomalies associated with iliac venous variations. The variation prevalence rates were analyzed and calculated.
Results: The incidence of iliac venous variations was 20.9%, and these were classified into eight types: normal, 79.1% (type 1); high joining of the IIV to the ipsilateral external iliac vein, 8.7% (type 2); the IIV joining to the contralateral common iliac vein (CIV), 2.3% (type 3); IIVs forming a common trunk, 0.9% (type 4); communicating vein from the IIV to the contralateral CIV or IIV, 7.8% (type 5); double IVC with or without a connecting vein, 0.9% (type 6); left IVC, 0.1% (type 7); and fenestration of the CIV, 0.4% (type 8). There were subtypes which varied according to right- or left-side variation and the status of smaller connecting veins. No statistical difference in the prevalence rate was found between men and women (p = 0.365).
Conclusions: Iliac venous variations are frequently seen on MDCT and can be classified into 8 types.
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| http://dx.doi.org/10.1007/s00276-014-1316-4 | DOI Listing |
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