Imaging Diagnosis of Splanchnic Venous Thrombosis

Box 3

Different types of collateral pathways described in association with BCS (Figures 24–31).

() Intrahepatic collaterals

() Extrahepatic collaterals

 (I) Inferior phrenic-pericardiophrenic collaterals

 (II) Superficial abdominal wall collaterals

 (III) Left renal-hemiazygous pathway

 (IV) Vertebro-lumbar azygous pathway