There are changes related to right frontal craniotomy bone flap with the evacuation of an underlying previously seen epidural hematoma which shows a significant regressive course regarding the amount and mass effect with the residual minimal heterogeneous collection as well as gas foci inside (pneumocephalus).
Minimal subgaleal thickening/ collection with small gas locules, subcutaneous drain in situ, and surgical sutures (post-operative changes).