Usually these findings are of no clinical consequence. These findings can be due to numerous reasons such as hypertension, hypercholesterolemia, inflammatory/autoimmune condition if you have such a history. MRI can be very sensitive and find things that are not really causing any symptoms -- microvascular changes can lead to very very tiny ischemic changes that can be seen. Certainly sometimes, these findings can be a sign of MS only if you have symptoms that would correlate to these imaging findings.
The good news is that most of these findings on MRI and CT usually are not anything to be worried about.
Particularly if you have any worrisome symptoms and regardless, definitely consult with your neurologist or treating physician to inquire about the clinical significance of these findings.