A knowledge of normal anatomy as well as the most frequent variants and abnormalities of the portal venous system are of great importance for liver surgery and interventional procedures. An understanding of the varied MDCT appearances of these abnormalities will allow more definitive diagnoses and help avoid false diagnoses.

Keywords: portal vein, abnormalities , portal vein, thrombosis , portal vein, gas , shunts, arterioportal , tomography, X-ray computed