Hemangiomahttps://en.wikipedia.org/wiki/Hemangioma
Hemangioma is a usually benign vascular tumor derived from blood vessel cell types. The most common form is infantile hemangioma, most commonly seen on the skin at birth or in the first weeks of life. A hemangioma can occur anywhere on the body, but most commonly appears on the face, scalp, chest or back. They tend to grow for up to a year before gradually shrinking as the child gets older. A hemangioma may need to be treated if it interferes with vision or breathing or is likely to cause long-term disfigurement.

The color of the hemangioma depends on how deep it is in the skin: superficial (near the skin's surface) hemangiomas tend to be bright red; deep (furthest from the skin's surface) hemangiomas are often blue or purple.

The most common types of hemangioma are infantile hemangiomas, and congenital hemangiomas.
Infantile hemangiomas
Infantile hemangiomas are the most common benign tumor found in children. They are made up of blood vessels, often called strawberry marks. They usually appear on the skin of infants in the days or weeks after birth. They tend to grow quickly for up to a year. Most then shrink or involute without further problem, however some can ulcerate and form scabs which can be painful.

Congenital hemangiomas
Congenital hemangiomas are present on the skin at birth, unlike infantile hemangiomas, which appear later. They are fully formed at birth, meaning that they do not grow after a child is born, as infantile hemangiomas do. The prevalence of congenital hemangioma is lower than that of infantile hemangiomas.

Diagnosis
Diagnosis is usually made clinically without a biopsy. Depending on the location of the hemangioma, tests such as an MRI or ultrasound may be done to see how far the hemangioma has reached under the skin and whether it has affected internal organs.

Treatment
Hemangiomas usually go away gradually over time and many do not require treatment. However, hemangiomas in potentially disabling areas (eyelids, airways) require early treatment. Cosmetically, early treatment usually gives better results.
#Dye laser (e.g. V-beam)
  • If the scalp lesion does not disappear spontaneously, excision may be considered.
  • Because of its irregular shape, malignant vascular tumors (Kaposi sarcoma) should be ruled out with a biopsy.
  • Infantile hemangioma ― It starts flat and thickens over time. In many cases, it may disappear naturally, but if not, laser treatment can be considered for cosmetic reasons.
  • Child's arm; The lesions may thicken over time, making it more difficult to treat with lasers (dye laser). Starting treatment as soon as possible is preferable for better cosmetic outcomes.
  • Cherry angioma ― It is a common benign neoplasm that develops with age.