CausesBy Mayo Clinic staff
It's not clear what causes a liver hemangioma to form. Doctors believe liver hemangioma is congenital — meaning that you're born with it.
Liver hemangioma usually occurs as a single abnormal collection of blood vessels that is less than about 1.5 inches (about 4 centimeters) wide. Occasionally liver hemangiomas can be larger or occur in multiples.
In most people, liver hemangioma will never grow and never cause any signs and symptoms. But in a small number of people, liver hemangioma will grow to cause complications and require treatment. It's not clear why this happens.
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- Curry MP, et al. Hepatic hemangioma. http://www.uptodate.com/home. Accessed May 31, 2013.
- Benign liver tumors. American Liver Foundation. http://www.liverfoundation.org/abouttheliver/info/benigntumors/. Accessed May 31, 2013.
- Assy N, et al. Characteristics of common solid liver lesions and recommendations for diagnostic workup. World Journal of Gastroenterology. 2009;15:3217.