What Does A Dystrophic Calcification In The Right Parietal Cortex And Patent Basilar Cisterns Mean In My Recent CT Scan?

My recent CT scan results:FINDINGS: The ventricles and sulci are proportionally prominent consistent with mild diffuse cerebral volume loss. The Evans index measures 0.3. No mass, mass effect or midline shift is seen. There is no abnormal increased attenuation identified to suggest hemorrhage. No extra-axial fluid collection is seen. The gray-white junction is preserved without evidence for cortical infarct. A dystrophic calcification is incidentally noted in the right parietal cortex. The basilar cisterns are patent. The osseous structures of the calvaria and skull base are intact. There is mild mucosal thickening in the frontal sinuses and anterior ethmoid air cells. No air-fluid levels are seen. The mastoid air cells and middle ear cavities are well-aerated. Bilateral lens replacements are noted. The orbits are otherwise normal in appearance. Please tell me what this means: A dystrophic calcification is incidentally noted in the right parietal cortex. The basilar cisterns are patent. And: A dystrophic calcification is incidentally noted in the right parietal cortex.