Not common at all, I'd take the radiologist's findings as good news thus far.
I forgot to ask originally, but did the radiologist's report indicate a Lung-RADS category for the nodule? My guess would be that the pulmonary specialist might order a PET/CT scan as a follow-up. Post back up how this goes, and don't let any fears get the best of you.
Done with contrast. No calcification.
CT scan done with, or without contrast? Also, did the nodule indicate calcification?