basal ganglia calcification

Basal ganglia calcification is common and is seen in approximately 1% of all CT scans of the brain, depending on the demographics of the scanned population. It is seen more frequently in older patients and is considered a normal incidental and idiopathic finding in an elderly patient but should be considered pathological in persons younger than the age of 40 years unless proved otherwise .

However, there are many causes of calcification:

See also