Definition of Hemangioma

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.

An hemangioma may be visible through the skin as a birthmark, known colloquially as a "strawberry mark." Most hemangiomas that occur at birth disappear after a few months or years.

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