Hi, I Had Xray On My Lungs, On Bottom Of

Hi, i had xray on my lungs, on bottom of xray part of lung not showing but other lung is, im a smoker , get chest coughs, my husband had large mass tumor growing for 5 years, they operated last Tuesday and results were cancer, it all started with melanoma cut out 5 years ago, now he has to go to ongology to have treatment due to finding nodes that have enlarged on liver, kidney, no straight answers, so a few questions for you