Abstract
Congenital anomalies of the inferior vena cava (IVC) are infrequent conditions. Most are asymptomatic and incidentally discovered. However, their recognition may sometimes have relevant clinical and therapeutic implications. The purpose of this report is to emphasize the importance of accurate identification and to assess the utility of three-dimensional contrast-enhanced magnetic resonance angiography (3D contrast-enhanced MRA) in their evaluation. We retrospectively evaluated the 3D contrast-enhanced MRA of 21 patients in whom an IVC anomaly was found. Five of these anomalies concerned the hepatic and prerenal segments, seven were located in the renal segment, and finally, the last nine concerned the postrenal segment. IVC anomalies are uncommon conditions which may sometimes have important clinical implications. 3D contrast-enhanced MRA is a good method not only to identify them, but also to depict them accurately and safely.
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