77-year-old male with known prostate cancer and history of head and neck cancer presents with altered mental status and negative head CT. There is no evidence of intracranial hemorrhage, mass, or acute infarct. Periventricular white matter T2/FLAIR hyperintense foci are seen, likely representing mild small vessel ischemic disease. Nonspecific T2/FLAIR hyperintense lesion is also seen within the right cerebellum measuring up to 1.0 cm (image 11, series 401). There is no associated enhancement or diffusion restriction. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
1.No evidence of acute infarct, intracranial mass or mass effect. No evidence of intracranial metastatic disease. 2.Mild chronic small vessel ischemic disease. Rounded T2/FLAIR hyperintense lesion in the right cerebellar hemisphere is nonspecific and may also represent sequela of prior ischemia or possibly treatment-related injury.