Abstract:

Inferior vena cava abnormalities(IVC) are very rare in general population and up to 8.7% including left renal vein abnormalities (Yang, Trad, Mendonça, Trad, 2013). With the accessibility and the development of cross-sectional imaging, abnormalities of IVC and its branches can be easily depicted and the frequency rate has been increased. In our case, a 67-year-old female patient had imaging findings of absence of intrahepatic segment of IVC and its continuity with dilated azygos vein, which were seen incidentally, in association with polysplenia, double right renal vein and retroaortic left renal vein. Knowing the embryonic basics of the major abnormalities of IVC is necessary for being aware of the IVC abnormalities and reporting and interpreting them accurately. To be aware of the abnormalities before invasive procedures can help preventing the possible complications. Although due to increased use of the imaging modalities, the IVC abnormalities are frequently seen in asymptomatic patients, one should also be kept in mind the likelihood of their presence in the patients with early adulthood onset thrombosis and chronic venous insufficiency.

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