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My doctor said I have a lung nodule. What does that mean, and should I be worried?

Nearly 95% of lung nodules are benign, according to the American Thoracic Society.

Approximately 50% of patients who undergo CT screening for lung cancer are found to have a lung nodule, according to the American Thoracic Society.
Approximately 50% of patients who undergo CT screening for lung cancer are found to have a lung nodule, according to the American Thoracic Society.Read moreGetty Images/iStockphoto