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Lung Nodules and Masses

Lung nodules can be cancerous (malignant), though most lung nodules are noncancerous (benign). Lung nodules (small masses of tissue in the lung) are quite common. They appear as round, white shadows on a chest X-ray or computerized tomography (CT) scan. Noncancerous lung nodules are often caused by previous infections.


  • Pain in the chest area
  • Continuous cough or coughing up blood
  • Tiredness
  • Hoarseness
  • Loss of appetite and unexplained weight loss
  • Recurring respiratory infections like bronchitis or pneumonia
  • Shortness of breath (dyspnea) or wheezing