<unk>  is abnormality of lymph vessels, which are normally involved in the re-circulation of excess body fluid back into the blood stream. The exact pathogenesis of<unk>  is not fully understood. It is thought that<unk>  is caused by either sequestration of lymph tissue, abnormal budding of lymph vessels, lack of fusion with the venous system, or obstruction of lymph vessels.<unk> s most commonly develop at the head and neck regions.
Lymphangioma
Hemangioma
Angioma
Cavernous angioma
Tufted angioma
Angiokeratoma
Spider angioma
Angiosarcoma