God, if it's a blood clot, you're in trouble....This is about hemangioma treatment, but it's from Wikipedia so it might not be entirely fact:
Most hemangiomas disappear without treatment, leaving minimal or no visible marks. Large hemangiomas can leave visible skin changes secondary to severe stretching of the skin or damage to surface texture. When hemangiomas interfere with vision, breathing, or threaten significant cosmetic injury, they are usually treated.
Up until recently, the mainstay of treatment was oral corticosteroid
treatment using agents such as propranolol
is revolutionising therapy, producing impressive responses. A publication in the international literature in June 2008 first suggested that propranolol (a Beta Blocker) could be used to treat severe hemangiomas
. This treatment is proving superior to corticosteroids, in terms of both effectiveness and safety.
Other treatments that have been used include interferon
. They may be considered if first-line therapy fails. Surgical removal is sometimes indicated, particularly if there has been delay in commencing treatment and structural changes have become irreversible. Surgery may also be necesary to correct distortion of facial features, again in the case of inadequate or failed early medical intervention.
Blockage of the airway will often require a tracheostomy
to be performed (insertion of an external airway through the front of the neck into the trachea below the level of the obstruction). Smaller raised lesions are sometimes treated with injection of corticosteroid
directly into the lesion. Pulsed dye laser
can be useful for very early flat superficial lesions if they appear in cosmetically significant areas or for those lesions that leave residual
urface blood vessels in the case of incomplete resolution. Unfortunately raised lesions or lesions under the skin do not respond to laser.
Ulceration will usually heal with topical medication and special dressings under medical supervision. Sometimes pulsed dye laser can be used to accelerate healing.