text: <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.
option_0: Lymphangioma
option_1: Hemangioma
option_2: Angioma
option_3: Cavernous angioma
option_4: Tufted angioma
option_5: Angiokeratoma
option_6: Spider angioma
option_7: Angiosarcoma