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A hemangioma of infancy is a (harmless) self- (swelling or growth) of , the cells that line . Examples of permanent malformations include ( vascular malformation) and masses of abnormal swollen (venous malformations). [ Hemangiomas are connected to the and filled with . Sometimes they grow in internal organs such as the or . Some are formed during ; the most common are not , but appear during the first few weeks of life. They are often initially misdiagnosed as a scratch or ; Typically, at the earliest phase in a superficial lesion, one will see a bluish red area with obvious blood vessels and surrounding . Hemangiomas are the most common childhood tumor, occurring in approximately ten percent of , and are less prevalent in other ethnicities. Hemangiomas are also more common in . [ The cause of hemangioma is currently unknown; [ The vast majority of hemangiomas are not associated with complications. Hemangiomas may break down on the surface, called . If a hemangioma develops in the , can be compromised. A hemangioma can grow and block one of the , causing an . Particular problems occur if the lip or nose is involved, as distortion can be difficult to treat . Children with large segmental hemangiomas of the head and neck can be associated with a disorder called . [ Most hemangiomas disappear without treatment, leaving minimal or no visible marks. Large hemangiomas can leave visible skin changes secondary to severe stretching of the skin or damage to surface texture. When hemangiomas interfere with vision, breathing, or threaten significant cosmetic injury, they are usually treated . A published letter reported that the . The applied gel , is also being trialled for small facial hemangiomas that do not justify systemic treatment. Other treatments that have been used include or . A pulsed can be useful for very early, flat, superficial lesions, if they appear in cosmetically significant areas or for those lesions that leave residual surface blood vessels in the case of incomplete resolution . [ In the proliferation stage, a hemangioma grows very quickly. [ [ Humpath (Pathology images) at humpath.com at medicinenet.com at rch.org.au at strawberry birthmark strawberry birthmark