<unk>  <unk>  is a vascular disease of the liver that occurs when a blood clot occurs in the hepatic<unk> <unk> , leading to increased pressure in the<unk> <unk>  system and reduced blood supply to the liver.
Abdominal sepsis
Abdominal surgery
Behçet's syndrome
Cholangiocarcinoma
Cirrhosis
Collagen vascular diseases (eg, lupus)
Compression or invasion of the<unk> <unk>  by tumor (eg, pancreatic cancer)
Diverticulitis
Endoscopic sclerotherapy
Hepatocellular carcinoma
Inflammatory bowel disease
Inherited thrombophilias (e.g. factor V Leiden deficiency, protein C or S deficiency, antiphospholipid syndrome)
Myeloproliferative disorders (e.g. polycythemia vera or essential thrombocytosis)
Omphalitis
Oral contraceptives
Pancreatic islet cell transplantation
Pancreatitis
Paroxysmal nocturnal hemoglobinuria
Pregnancy 
Retroperitoneal fibrosis
Splenectomy complication
Transjugular intrahepatic portosystemic shunt (TIPS)
Trauma
Portal vein thrombosis
Mesenteric vein thrombosis
Deep venous thrombosis
Budd-Chiari syndrome
Superficial thrombophlebitis
Venous thromboembolism
Lymphangitis
Phlebitis