Lung cancer often doesn't have symptoms in the early stages, but as the cancer grows, it can cause a wide range of warning ...

Lung cancer symptoms extend beyond respiratory issues and can manifest as shoulder pain. Tumors pressing on nearby nerves can ...

Though black phlegm is not always a cause for concern, it could be a sign of lung cancer or exposure to a pollutant. Figuring out the cause will help the doctor recommend the best course of treatment.