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A tumor composed of blood vessels. Also known as capillary angioma.



a benign tumor of the blood vessels. Hemangiomas generally arise in early childhood from congenital redundant vascular rudiments. Hereditary and hormonal factors also play a part in the formation of hemangiomas, which are found most often in women and children. Hemangiomas of the cutaneous tissues are most common, but they sometimes spread to the underlying organs, passing from the skin to the mucous membrane and impairing the function of organs and tissues. They may also affect muscles and tendons, bone, and internal organs (most frequently the liver). Superficial hemangiomas look like pinkish red or purplish blue strawberry marks. Hemangiomas may ulcerate and bleed. Treatment involves surgery or removal by chemical, thermal, or radiation therapy.

References in periodicals archive ?
Instead of a true hemangioma, the lesion has been considered as a reactive and hyperproliferative vascular response to a variety of stimuli rather than a true hemangioma.
In this study, we collected tissue samples from IH patients and isolated the hemangioma cells for investigating the mechanism of propranolol on the regression of hemangiomas.
Caption: The breakthrough of propranolol for hemangioma treatment profoundly changed hemangioma management.
Flexible laryngoscopy demonstrates a laryngeal hemangioma emanating from the right ventricle.
Intramuscular hemangioma (IMH) is a rare benign vascular tumor that accounts for <1% of all hemangiomas (1).
The oral form of the drug was used off label to treat patients with hemangioma after a French dermatologist discovered in 2007 that it could effectively treat the condition.
Chronic occult blood loss and iron deficiency anemia are the most common types of presentation, (4) however, cavernous hemangioma might be large in size (5) and could cause severe bleeding.
We report a case of synovial hemangioma presenting as a painful locked knee.
Although growth factors and hormonal and mechanical influences have been postulated to affect the abnormal proliferation of endothelial cells in hemangioma, the primary, causative defect in hemangiogenesis remains unknown and no genetic alteration has been implicated.
PHACE/S is a syndromic form of infantile segmental hemangioma described by Friedon et al in 1996.
After adjusting for gestational age and multiple gestations, the researchers found that infants born to mothers with gestational diabetes were more likely to have an infantile hemangioma (odds ratio, 1.