Docs Here Saythe Cyst In My Left Labia Majora Is

Docs here saythe cyst in my left labia majora is a hemangioma. It is big about 7cm long and and more than 3 cm in diameter. It has grown from around 5cm to this size from last year. Do hemangiomas grow this big? The docs want to have it excised but i am apprehensive it may turn out to be cancerous.