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Posts Tagged ‘cavernous hemangioma’

Cavernous hemangiomas are the most common intraorbital tumors found in adults. These common birthmarks usually become symptomatic in older children, with bluish skin discoloration, local swelling, and pain. Cavernous hemangiomas arise from the endothelial cells that line the blood vessels and consist of multiple, large vascular channels lined by a single layer of endothelial cells and supported by collagenous walls. These tumors are frequently asymptomatic and incidentally discovered at imaging, surgery, or autopsy. Hemangiomas are uncommon in cirrhotic livers; the fibrotic process in cirrhotic liver may prohibit their development. Hemangiomas can occur in individuals of any age. The tumors frequently occur in middle-aged women.

A cavernous hemangioma in the skin extends more deeply than a capillary hemangioma and is less likely to regress spontaneously. Cavernous malformations tend to grow because of repeated small hemorrhages, or leaking of blood around the abnormal tissue. Henderson reported an incidence of 4.3% among orbital neoplasms. Cavernous malformations range in size from less than one-quarter inch to the size of a small orange. They occur equally in men and women and have been found in people of almost all ages. Cavernous hemangiomas are the most common symptomatic vascular malformations (birthmark). These common birthmarks usually become symptomatic in older children or young adults, with bluish skin discoloration, local swelling, and pain.

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A hemangioma is an abnormal build up of blood vessels in the skin or internal organs. Hemangiomas are one of the most common birthmarks in newborns. Most hemangiomas are not present at birth but develop within the first few weeks to months of life. They are found in up to 10 percent of babies by the age of one. Most children with hemangiomas have only one. Many have a few. Rarely, children may have many, both on the skin and in the internal organs. Some have enough extra vascular tissue to cause anemia or platelet problems. Hemangiomas, both deep and superficial, undergo a rapid growth phase in which the volume and size increase rapidly.

This phase is followed by a rest phase, in which the hemangioma changes very little, and an involutional phase in which the hemangioma begins to disappear. During the involutional phase, hemangiomas may disappear completely. Large cavernous hemangiomas distort the skin around them and will ultimately leave visible changes in the skin. A superficial capillary hemangioma may involutes completely, leaving no evidence of its past presence. There are two types of liver hemangioma: cavernous and hemangioendothelioma. Cavernous hemangioma arises in individuals of all ages and all over the world. Cavernous hemangiomata are more common in women than men. Estrogens may augment their size.

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