Was diagnosed with pneumonia, but is there a nodule in the left lung serious?

First of all, it won't become cancerous. You want to tell me, how big is the small nodule in the left lower lung, 1cm or 4cm? Different sizes have different considerations, but the overall feeling should be irrelevant. Don't worry about lung cancer

But always catching a cold is a problem, so be careful. If necessary, you can get flu vaccine and pneumonia vaccine every year to provide immunity.