Hepatic Hemangioma
Overview
Plain-Language Overview
Hepatic hemangioma is a common benign tumor of the liver made up of clusters of blood vessels. It usually does not cause symptoms and is often found incidentally during imaging tests done for other reasons. The main concern with this condition is the potential for the tumor to grow large enough to cause abdominal pain or discomfort. Most people with a hepatic hemangioma live normal lives without complications. The condition involves the vascular system within the liver and rarely affects liver function. It is important to distinguish it from other liver masses that may require different treatments.
Clinical Definition
Hepatic hemangioma is a benign vascular liver tumor characterized by a mass of dilated blood-filled vascular channels lined by a single layer of endothelial cells. It is the most common benign liver tumor and is thought to arise from a congenital malformation of the hepatic vasculature. These lesions are typically well-circumscribed and can vary in size from a few millimeters to several centimeters. Most hepatic hemangiomas are asymptomatic and discovered incidentally on imaging. Large lesions may cause symptoms due to mass effect or rarely rupture, leading to hemorrhage. The clinical significance lies in differentiating these benign tumors from malignant liver lesions and managing complications if they arise.