Neoplasm of unspecified behavior of brain status post resection. There are postoperative findings related to left suboccipital craniotomy with a small amount of air and blood products within the surgical bed. There has been partial resection of a T2 hyperintense mass involving the left cerebellar hemisphere. The residual mass measures up to approximately 4 cm. There is persistent associated mass effect upon the adjacent brainstem with obliteration of the cerebellomedullary and cerebellopontine angle cisterns. In addition, the cerebral aqueduct is effaced and the fourth ventricle appears slitlike, while the lateral and third ventricles are dilatated and surrounded by periventricular T2 hyperintensity. While there is restricted diffusion within and surrounding the tumor, which may be due to ischemia, there is otherwise no evidence of acute territorial infarction. There are a few scattered nonspecific punctate foci of T2 hyperintensity within the cerebral white matter. There is mild mucosal thickening in the bilateral maxillary sinuses. The orbits are unremarkable.
Postoperative findings related to recent left suboccipital craniotomy and partial resection of left cerebellar mass with persistent obstructive hydrocephalus.I personally reviewed the Images and/or procedure with the Resident/Fellow and agree with this report.