Wonder how that is treated, since I keep reading how simple it is if caught in time. Also, reminds me of Star Trek IV, that's what Chekov was dying from and the 20th century doctors wanted to slice open his head...
Generally the treatment is emergency surgery, where the skull is opened and the hematoma is removed. With the advent of computerized tomography (CT) it has been possible to become somewhat more conservative in patients with small hematoma and who has no serious neurological symptoms. However, an epidural hematoma with temporal location should in almost all cases be treated surgically.
Post 27 has a link on treatment.
They remove a small part of the skull to allow room for the swelling.