44-year-old male status with bilateral DBS insertion. Interval placement of bifrontal DBS electrodes entering the frontal bones bilaterally and terminating in the region of the cerebral peduncles bilaterally. Foci of pneumocephalus are consistent with the patient's history of recent DBS insertion. There is no evidence of postoperative hemorrhage or hematoma formation. There is no evidence of intracranial hemorrhage, extra-axial fluid collection, mass or edema. There is no mass effect or midline shift. There is preservation of the gray-white matter interface. There is no evidence of acute territorial ischemia. The ventricles and basal cisterns are normal in size and configuration. There is no effacement of the basal cisterns. Redemonstration of posterior fossa arachnoid cyst better demonstrated on recent MRI examination.Bilateral bifrontal bone burr holes. The calvaria and skull base are otherwise radiographically normal. The visualized mastoid air cells and paranasal sinuses are within normal limits.
1. Expected postoperative changes from interval placement of bilateral DBS electrodes without evidence of complication.2. Posterior fossa arachnoid cyst, unchanged.