I Had A TC And It Showed Some Hipodense Nodules

I had a TC and it showed some hipodense nodules on my left renal cortex, the biggest has 16mm in its largest area, The DOC felt he didn´t need to use the contrast.. I feel nothing and always been very healthy and never even had a headache or continuous fever in my whole life. I had tennis leg 6 months ago which led to a DVT (deep vein thrombosis) due to my idleness for 14 days, went on a 3 month treatment with Xarelto and Daflon and I am much better now, also had dengue 4 years ago due to a mosquitoe byte. I am 44 years old. Should I be worried about these hypodense nodules?

Regards.