Table 2. Classification of portal hypertension in children10.
| Prehepatic | Intrahepatic | Post-hepatic |
| Splenic vein thrombosis | Autoimmune hepatitis | Budd-Chiari syndrome |
| Portal vein thrombosis | Hepatitis B and C | Congestive heart failure |
| Congenital stenosis of the portal vein | Alfa1 anti-trypsin deficiency | Inferior vena cava obstruction |
| Arteriovenous fistula | Wilson’s disease | |
| Splenomegaly | Steatohepatitis | |
| Glycogen storage disease type IV | ||
| Toxins | ||
| Biliary atresia | ||
| Primary sclerosing cholangitis | ||
| Cystic fibrosis | ||
| Congenital hepatic fibrosis | ||
| Caroll’s disease | ||
| Choledochal cyst | ||
| Familial cholestasis | ||
| Veno-occlusive disease | ||
| Schistosomiasis | ||
| Gaucher’s disease | ||
| Idiopathic portal hypertension | ||
| Peliosis hepatis | ||
| Primary biliary cirrhosis |