Hi and welcome to HCM.Thank you for your querry.
Calcifivations are in most cases sign of chronic changes due to ageing and this is commonly found in most of the people of his age. It can be sign of tumour but in some other organs,not prostate
. All he need is frequent ultrasounds check ups and PSA control. If somethin suspicous is founds biopsy
can be performed but I dont think this is necessary. Wish you good health.