pulmonary lung nodules special

What are pulmonary (lung) nodules? Pulmonary (lung) nodules are growths or "spots" in the lungs. You may have just one nodule (called a solitary pulmonary nodule) or more than one (called multiple nodules). What causes lung nodules? Lung nodules may be caused by: A lung cancer. A cancer that has spread (metastasized) to...