<unk>  was first described by Dr. Robert Liston, a British surgeon, in 1843.<unk>  may be classified according to International Society for the Study of Vascular Anomalies into six subtypes: Infantile<unk> , congenital<unk> , tufted angioma, spindle-cell<unk> , epithelioid<unk> , and lobular capillary<unk> . Development of<unk>  is the result of genetic mutations, overexpression of angiogenic fators and downregulation of inhibitors of angiogenesis.<unk>  may be associated with POEMS syndrome and Castleman disease. On gross pathology, spongy with vascular compartments of various sizes separated by fibrous tissue are findings of<unk> . On microscopic histopathological analysis, channels lined by benign endothelium containing red blood cells are findings of<unk> . There are no established causes for<unk> .<unk>  must be differentiated from other diseases such as: Congenital<unk> , kaposiform hemangioendothelioma, tufted angioma, and nevus flammeus, and pyogenic granuloma. The prevalence of infantile<unk>  is estimated to be up to 10% in general population.<unk>  commonly affects infants. Females are more commonly affected with<unk>  than males. Common risk factors in the development of<unk>  are female gender, prematurity, low birth weight, and fair skin. According to the United States Preventive Services Task Force, there is insufficient evidence to recommend routine screening for<unk> . If left untreated, 20% of patients with<unk>  may progress to develop ulceration, hemorrhage, infection, and high output cardiac failure. Common complications of<unk>  include ischemia, necrosis, ulceration, and bleeding. Prognosis is generally good. Physical examination findings of superficial<unk>  include well-demarcated, flat, and erythematous red patches. The majority of cases of<unk>  are self-limited. Patients with small, stable<unk> s in non-vital sites are treated with "wait and see" approach, whereas patients with fast growth of<unk>  are treated medically. Surgery is not the first-line treatment option for patients with<unk> . It is usually reserved for patients with either massive protuberant proliferating<unk>  and lesions that are refractory to less invasive treatments.
Hemangioma
Lymphangioma
Angioma
Angiokeratoma
Tufted angioma
Spider angioma
Cavernous angioma
Angiosarcoma