Annotated image
The huge acute subdural overlying the right cerebral hemisphere as well as filling the floor of the middle cranial fossa and tracking along the posterior aspect of the falx (blue arrow), results in marked mass effect and midline shift (red).
There is marked uncal herniation (yellow) with significant distortion of the midbrain (blue dotted line).
Following the craniectomy (orange arrow) and evacuation of the hematoma, an anterior cerebral artery infarct has developed on the right (green *).