My daughter has 3 deep hemangiomas - 1 parotid (on her cheek by her salivary gland), one on her shoulder and one on her fingertip.
The h on her cheek is the only one that was of real concern as it was growing rapidly (a cm a week) and was still growing even after starting oral steroids at 3 weeks of age. At it's largest, her h was measuring 6 cm across. At 7 weeks, we started on a new treatment (for h's) - Propranolol is a beta blocker that was discovered to work amazingly well on h's, deep h's in particular seem to respond well. My daughter's is improved signifigantly and I wish we had never started the steroids. I am feeding my daughter at the moment or I'd write more. If you are going to end up treating the h, and you may because of it's location, you might consider the propranolol treatment.
I commented in a couple of threads regarding our experience and decision to use it. If you search the forums for propranolol, you may find some of them.