Did it look like a nodule? size? I've never seen any data in regard to lung cancer and NTMs. I'm more worried about CT scans. I've had an unbelievable amount of CTs in the past 20 years. I just had a similar experience, my August CT showed a new nodule since my May CT. NJH doctor said she wanted to get another CT in 2 months. She didn't think it was cancer; she thought it was either mucus or possibly my MABC or some other infection. I have (had?) MABC but have been testing negative-though that's no guarantee it's gone.