 An apparent area of linear high signal in the left cerebellum on the post-contrast 3D T1-weighted images is likely artifactual. There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is mild bilateral basal ganglia mineralization. The brain parenchyma and pituitary gland otherwise appear unremarkable. There is no abnormal intracranial enhancement. 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. There is fluid within the bilateral mastoid air cells. There is minimal paranasal sinus mucosal thickening. The skull and scalp soft tissues are grossly unremarkable. The left lens has been replaced.
1. No convincing evidence of intracranial metastases. Indeed, an area of linear high signal in the left cerebellum on the post-contrast 3D T1-weighted images is likely artifactual rather than actual neoplasm. Nevertheless, a short interval follow up MRI may be useful.2. Nonspecific within the bilateral mastoid air cells.