What is hemangioma

Hemangioma is a benign tumor that occurs in vascular tissue and is the most common benign tumor in infants and young children, with an incidence of 1%-2% in newborns, rising to 12% around the age of 1 year. The incidence rate is higher in females than males, with a male to female incidence ratio of 1:3. Most hemangiomas are located in the head and neck and are superficial in location, with a few occurring in mucous membranes, muscles, bones and internal organs. Most hemangiomas occur at birth or shortly after birth, and the course of most hemangiomas goes through a proliferative phase, a regressive phase, and a complete regressive phase. Most hemangiomas progress through a proliferative phase, a regressive phase, and a complete regression phase. When the tumor enters the regressive phase, it regresses at a rate of approximately 10% per year, with some lesions remaining as dilated capillaries, atrophic plaques, or fibrofatty tissue. The etiology and pathogenesis of hemangiomas are not well understood. Hemangiomas are true tumors characterized by excessive proliferation of endothelial cells, and proliferative hemangiomas often affect the appearance due to rapid growth of the tumor. It can compress and destroy the function and morphology of surrounding tissues and organs to different degrees, and affect the growth and development of human body. Some of them can repeatedly bleed and become infected, and very few of them can produce malignant changes and even endanger life.