Had 2 low-dos ct scans of chest found 3 nodules 2mm 3mm 4mm no change between 2 had 4 month apart had 3rd done 5 months now they say cancer lungs?

Was a biopsy done? Your doctors cannot be certain unless a biopsy is done. How large was the nodule when it was called a cancer? What were the characteristics of the nodule? Four instance if it became speculated that would be suspicious but a biopsy would still be necessary.