<unk>  on a child's arm.<unk> s are benign (noncancerous) vascular tumors, and many different types occur. The correct terminology for these<unk>  types is constantly being updated by the International Society for the Study of Vascular Anomalies (ISSVA). The most common are infantile<unk> s, and congenital<unk> s. Infantile<unk> s Infantile<unk> s are the most common benign tumor found in children. They are made up of blood vessels, often called strawberry marks, and are more common in girls than in boys. 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. Depending on their location and size, they may also be disfiguring. Rarely, they may be related to disorders of the central nervous system or spine. They may also occur in the internal organs of the body, such as the liver, airway or brain. The color of the<unk>  depends on how deep it is in the skin: superficial (near the skin's surface)<unk> s tend to be bright red; deep (furthest from the skin's surface)<unk> s are often blue or purple; mixed<unk> s may have colors of both superficial and deep. Congenital<unk> s Congenital<unk> s are present on the skin at birth, unlike infantile<unk> s, which appear later. They are fully formed at birth, meaning that they do not grow after a child is born, as infantile<unk> s do. They are less common than infantile<unk> s. Congenital<unk> s can be coloured from pink to blue. Congenital<unk> s are classified according to whether they shrink and go away, or do not shrink, and do not go away, or partially shrink. Those that shrink are known as rapidly involuting congenital<unk> s (RICH) and go away quickly. Those that do not shrink, and remain are known as noninvoluting congenital<unk> s (NICH). Others that partially shrink are known as partially involuting congenital<unk> s (PICH).
Hemangioma
Lymphangioma
Angioma
Lymphohemangioma
Angiokeratoma
Chorangioma
Tufted angioma
Chorioangioma