<unk> s are benign tumors derived from cells of the vascular or lymphatic vessel walls (endothelium) or derived from cells of the tissues surrounding these vessels.<unk> s are a frequent occurrence as patients age, but they might be an indicator of systemic problems such as liver disease. They are not commonly associated with malignancy.
Angioma
Lymphangioma
Hemangioma
Hematoma
Chorangioma
Lymphohemangioma
Angiokeratoma
Chorioangioma