If a hemangioma is found in the brain, it is a serious case because it can easily rupture and bleed due to stimulation. In severe cases, massive bleeding can lead to compression of the brain tissue, resulting in brain herniation and even death due to severe coma, shock or even respiratory depression. If the hemangioma is superficial in the extremities and not very serious, even if it ruptures, the most that can happen is the formation of subcutaneous hematoma in the extremities, which is not life-threatening.