Clinical question: 30-year-old male with headaches with associated epistaxis and blurry vision. Non-enhanced CT of brain:Images through supratentorial space demonstrate no evidence of hemorrhage, edema, mass-effect, midline shift or hydrocephalus. The gray/white matter differentiation is well preserved.Images through posterior fossa demonstrate a large heavily calcified lesion in the right cerebellum posteriorly. This lesion measures approximately 21 mm in transverse axis and 26-mm in transverse axis (image 8 of 31). This finding is not associated with any vasogenic edema. Etiology of this finding is not certain the finding however could represent a dystrophic calcification, cavernoma or a partially calcified neoplasm. Further evaluation with an MRI is recommended.The folia of the cerebellum and vermis appears more pronounced than is expected for patient's stated age of 30 and this is concerning for underlying parenchymal volume loss.The calvarium, paranasal sinuses, mastoid air cells and middle ear cavities are well pneumatized and unremarkable.
1.26-mm x 21 mm irregularly shaped heavily calcified lesion in the posterior aspect of right cerebellum. Dystrophic calcification, cavernoma or a partially calcified neoplasm is suspected and follow-up with a enhanced dedicated MRI of brain is recommended.2.Suspected parenchymal volume loss of the cerebellum and vermis for patient stated age.3.No abnormality in the supratentorial space.4.Calvarium, paranasal sinuses and mastoid air cells are unremarkable.