Vascular malformation composed of dilated or tortuous capillaries found in the brain (cerebral cavernous malformation), spinal cord, retina, liver, and other soft tissues. Benign, irregular, and mostly unilateral, they may occur spontaneously or in autosomal dominant inheritance pattern. Mild sporadic occurrences are mostly asymptomatic; however, seizures, progressive neurologic deficits, vision and hearing loss, hemorrhage, proptosis, or headache may occur. Cavernous hemangiomas of the liver (hepatic hemangiomas) are a common, benign, small hepatic lesion, usually solitary, but can be multiple and large. These may present with abdominal pain and hepatic mass. Multiple approaches to treatment include surgical and nonsurgical techniques.