Swollen lymph nodes in chest and lung nodule, cancer? reason to be scared?

Evaluation needed: While lung cancer can present like that, there are a fewl other causes for chest lymphadenopathy and a pulmonary nodule, including infectious and inflammatory diseases. Without a doubt, further evaluation is mandatory, likely with a pet scan and likely a diagnostic biopsy. Of course the medical history is important (smoking, history of other cancers etc).

Maybe: Consult a specialist. May be anything from scarring through infection to cancer. You may need a biopsy or further tests such as a pet scan.