@burdyblue, the size of the nodule can come into play when a pulmonologist is determining the next steps. Sometimes they want to wait and see if it grows. In that case they may suggest waiting ~3 months and doing another CT scan. Personally, I have had a .8cm nodule biopsied by robotic bronchoscopy, but I was already a lung cancer patient, so they were 90% sure that we were dealing with cancer recurrence. It turned out to be fungal, not cancer.
Your primary nodule is over that questionable point.