Infantile hemangiomas (IHs) are the most common benign vascular tumors of infancy. Since they predominantly involute without significant residua, the majority do not require treatment. Indications for intervention include ulceration, prevention of disfigurement, and impairment of function or vital structures. Some IHs have associated structural anomalies. When and which IH to treat requires knowledge of the natural history and clinical findings of increased risk. Congenital hemangiomas (CHs) are fully formed at birth. They also differ from IHs in their histological and immunohistochemical findings and thus represent a distinct clinical entity. Their clinical characteristics and management are also discussed.
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