hemangioma

hemangioma
/hi man'jee oh"meuh/, n., pl. hemangiomas, hemangiomata /-meuh teuh/. Pathol.
See under angioma.
[1885-90; < NL; see HEM-, ANGIOMA]

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Congenital benign tumour made of blood vessels in the skin.

Capillary hemangioma (nevus flammeus, port-wine stain), an abnormal mass of capillaries on the head, neck, or face, is pink to dark bluish-red and even with the skin. Size and shape vary. It becomes less noticeable or disappears with age. Immature hemangioma (hemangioma simplex, strawberry mark), a reddish nub of dilated small blood vessels, enlarges in the first six months and may become ulcerated but usually recedes after the first year. Cavernous hemangioma, a rare, red-blue, raised mass of larger blood vessels, can occur in skin or in mucous membranes, the brain, or the viscera. Fully developed at birth, it is rarely malignant. Hemangiomas can often be removed by cosmetic surgery.

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also spelled  Haemangioma, 

      a congenital, benign tumour, made up of new-formed blood vessels of the skin. There are three main types.

      Capillary hemangioma, also called nevus flammeus or port-wine stain, is a common skin lesion resulting from abnormal local aggregation of capillaries, the smallest blood vessels. The stain-like lesion is smooth surfaced, not elevated, and well demarcated. It is pink to dark bluish-red. It varies in size and shape and is seen most frequently on the back of the head or neck and less frequently on the forehead and about the eyes. There is no satisfactory treatment, but the lesion usually becomes less noticeable and sometimes disappears as the skin thickens with age.

      Immature hemangioma, also called hemangioma simplex or strawberry mark, is a common reddish nubbin on the skin, constituted of aggregations of dilated small blood vessels, which may or may not occur singly. If not already present at birth, it becomes noticeable within the first few weeks of life. The lesion first enlarges to some degree, reaching its maximum size by the age of six months or so, and occasionally becomes ulcerated; but it usually recedes after the first year of life. Spontaneous complete involution of the lesion occurs in practically all cases, normally taking place in early childhood. Treatment is rarely necessary.

      Cavernous hemangioma, a rare, red-blue, raised tumour, is constituted of rather large blood vessels enclosed within a framework of connective and fatty tissues. Although most often associated with the skin, it is also sometimes found in mucous membranes, the brain, and the viscera. In all cases, it is present fully developed at birth; it is rarely malignant and increases in size only to the same extent as that of the body part involved. There is no satisfactory treatment. For cosmetic purposes, surgery, if feasible, may be considered.

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Universalium. 2010.

См. также в других словарях:

  • Hemangioma — of Infancy Classification and external resources A small hemangioma of infancy ICD 10 D …   Wikipedia

  • Hemangioma — capilar de un infante. Clasificación y recursos externos CIE 10 D18.0 …   Wikipedia Español

  • hemangioma — m. angiol. Angioma formado por la hiperplasia de numerosos vasos sanguíneos. Medical Dictionary. 2011. hemangioma angioma verdad …   Diccionario médico

  • hemangioma — hemangiomà dkt. Kvėpãvimo takų̃, véido, pir̃štų hemangiomà …   Bendrinės lietuvių kalbos žodyno antraštynas

  • hemangioma — |ô| s. m. [Medicina] Tumor do tecido dos vasos sanguíneos.   ‣ Etimologia: hema + angioma …   Dicionário da Língua Portuguesa

  • hemangioma — f. Proliferación superficial de capilares sanguíneos que se manifiesta como una mancha de color rojo oscuro en la piel …   Diccionario de la lengua española

  • hemangioma — [hē man΄jē ō′mə] n. pl. hemangiomata [hē man΄jē ō′mə tə] or hemangiomas a benign tumor, lesion, or birthmark consisting of dense clusters of blood vessels …   English World dictionary

  • Hemangioma — ► sustantivo masculino MEDICINA Tumor benigno, generalmente congénito, formado por la proliferación de vasos sanguíneos. * * * hemangioma. f. Proliferación superficial de capilares sanguíneos que se manifiesta como una mancha de color rojo oscuro …   Enciclopedia Universal

  • Hemangioma — A birth irregularity where a localized tissue mass grows rich in small blood vessels. Capillary hemangiomas are composed nearly entirely of tiny capillary vessels. Cavernous hemangiomas are composed of blood filled "lakes" and channels …   Medical dictionary

  • Hemangioma — nepiktybinis kraujagyslių navikas statusas T sritis gyvūnų raida, augimas, ontogenezė, embriologija atitikmenys: lot. Haemangioma; Hemangioma ryšiai: platesnis terminas – kraujagyslių ydos sinonimas – hemangioma …   Veterinarinės anatomijos, histologijos ir embriologijos terminai


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