What surgery has been performed?
Decompressive craniectomy and evacuation of the SDH.
What complication has developed? What is the cause?
Right anterior cerebral artery infarct, due to compression of the artery against the falx.
There has been a right craniectomy, and postoperative pneumocephalus is now present. The previously demonstrated dense subdural blood has been evacuated. Extraaxial CSF density fluid is seen adjacent to the right temporal pole.
There is now an established right anterior cerebral artery infarct. A shallow layer of subdural blood persists along the posterior falx and right tentorium cerebelli.