hemangioma (redirected from Hemagioma)

hemangioma /he·man·gi·o·ma/ (he-man″je-o´mah)

1. a benign tumor, usually in infants or children, made up of newly formed blood vessels and resulting from malformation of angioblastic tissue of fetal life.

2. a benign or malignant vascular tumor resembling the classic type but occurring at any age.

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ameloblastic hemangioma  hemangioameloblastoma.

capillary hemangioma 

1. the most common type, having closely packed aggregations of capillaries, usually of normal caliber, separated by scant connective stroma.

2. strawberry h.

cavernous hemangioma  a red-blue spongy tumor with a connective tissue framework enclosing large, cavernous, vascular spaces containing blood.

sclerosing hemangioma  a form of benign fibrous histiocytoma having histiocytic and fibroblastic elements, numerous blood vessels, and hemosiderin deposits.

strawberry hemangioma 

1. a red, firm, dome-shaped hemangioma seen at birth or soon after, usually on the head or neck, that grows rapidly and usually regresses and involutes without scarring.

2. vascular nevus.

venous hemangioma  a cavernous hemangioma in which the dilated vessels have thick, fibrous walls.

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he·man·gi·o·ma (h-mnj-m)

n. pl. he·man·gi·o·mas or he·man·gi·o·ma·ta (-m-t)

A congenital benign skin lesion consisting of dense, usually elevated masses of dilated blood vessels.

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Hemangioma

A benign skin tumor composed of abnormal blood vessels.

Mentioned in: Birthmarks

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hemangioma

[hēman′jē·ō′mə] pl. hemangiomas, hemangiomata

Etymology: Gk, haima + angeion, small vessel, oma

a benign tumor consisting of a mass of blood vessels. Also spelled haemangioma.

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hemangioma [he-man″je-o´mah]

a congenital vascular malformation consisting of a benign tumor made up of newly formed blood vessels clustered together; it may be present at birth in various parts of the body, including the liver and bones. In the majority of cases it appears as a network of small blood-filled capillaries near the surface of the skin, forming a reddish or purplish birthmark.

cavernous hemangioma a congenital vascular malformation that has a soft, spongy consistency and may contain a large amount of blood. It usually appears during the first few postnatal weeks and disappears by the age of 9 years. The most common sites are head, neck, and viscera such as the liver, spleen, or pancreas. Treatment varies according to the size of the lesion.

strawberry hemangioma a circumscribed capillary hemangioma, which may be present at birth or may appear soon after birth. These are most common on the head, neck, and trunk and appear as small macules that develop into raised purplish-red lobulated tumors. Most involute by age 2 to 3.

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hemangioma (hē·man·jē·ōˑ·m),

n a benign tumor that consists of an accumulation of blood vessels.

Hemangioma.

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hemangioma (hēman´jēō´m),

n 1. a benign neoplasm characterized by blood vascular channels. A cavernous form consists of large vascular spaces. A capillary form consists of many small blood vessels.
n 2. a benign tumor composed of newly formed blood vessels.

Hemangioma.

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hemangioma

a benign tumor made up of newly formed blood vessels, clustered together. In animals they occur mostly on the skin and in the spleen. In birds, they may be caused by leukosis virus. See also bovine cutaneous angiomatosis, hemangiomatosis, telangiectasia.

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disseminated cavernous hemangioma

multiple, small hemangiomatous tumors found in skin and internal organs; in calves and pigs rarely.

verrucous hemangioma

hemangioma in superficial dermis; induce epithelial hyperplasia.

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hemangioma

Surgery A tumor composed of clustered blood vessels, seen in the skin and elsewhere. See Capillary hemangioma, Congenital hemangioma, Postnatal hemangioma, Sclerosing hemangioma, Strawberry hemangioma, Swiss cheese hemangioma.