Hello and thank you for your query!
The most important aspect is to know if it is a meningeal/dura mater
calcification (which is a common finding in adults), or a true brain calcification (usually non-specific, some of them correspond to sequelae of parasitic infection
, especially if multiple).
In both cases, there is usually no progression and, if the remaining brain is normal, they should not be a cause of worry.
I wish you Good Health!