I will send prayers Mike's way that this is not lung cancer. There are other things it could be and seeing you are form California it could be Cocci among other things. Not all “suspicious shadows” are lung Cancer .. thank god!
If it is cancer and his recent Xrays for pneumonia did not show any thing then with luck you have caught it early. Over the years via my job I have met a fair number of people that had lung cancer caught early and here it is 15, 20, 30 yrs later and they are fine with no cancer, Some had surgery and that was it , some had surgery and Chemo and/or radiation.
Finding a spot on the lung is indeed a wake up call to remind us to live each day to the fullest as you never know what day is to be your last.
Please keep us informed as it will be wonderful to hear some good news or in the case of bad news we are all here ready to help. Sending positive thoughts and prayers your way. JanMarie