Learn about the definition, epidemiology, aetiology, diagnosis, management, and prognosis of Budd-Chiari syndrome, a rare condition of hepatic venous outflow obstruction. Access guidelines, images, videos, and references from BMJ Best Practice. Budd-Chiari syndrome is a disorder caused by blood clots that block blood flow from the liver. Learn about the causes, symptoms, diagnosis, and treatment options, including medications, procedures, and liver transplantation. Budd-Chiari syndrome, also known as hepatic venous outflow obstruction (HVOO), refers to the clinical picture that occurs when there is partial or complete obstruction of the hepatic veins. Budd-Chiari syndrome is a condition caused by occlusion of hepatic veins. Learn about its causes, symptoms, and treatment options for effective management.