Calcium in the testes

I had an ultrasound done recently on my balls and the doc told me I had chalk in them. He said it's nothing to worry about but gave me no information on how this happened. Can anybody shed some light on this please?

its called testicular microlithiasis . a finding which can occur in 2 - 10 % of population. nothing wrong with it only concern is it is associated with increase risk of testicular malignancy .. just have follow up ultrasounds , may be yearly basis, other wise live a normal life.