Comfrey herb tea-induced hepatic veno-occlusive disease

Vascular diseases of the liver are less common than other liver diseases, such as hepatitides, cholestatic diseases and alcoholic/nonalcoholic fatty liver diseases, but are gaining increasing recognition because of the improved diagnosis of these other diseases, as well as the secondary involvement of vessels in the course of almost all liver diseases. The dramatic decrease in chronic viral hepatitis C due to effective antiviral regimens in recent years also highlights the increased proportion of vascular diseases as pathology in liver seen by practitioners in daily practice. This chapter focuses mainly on primary vascular diseases of the liver using a classification based on the type of blood vessels involved, since different aetiologies of vascular liver disease affect respective aspects of the hepatic vasculature.