What are the pathologic mechanisms through which cancer spreads to the lungs?

Updated: Feb 08, 2019
  • Author: Daniel S Schwartz, MD, MBA, FACS; Chief Editor: John Geibel, MD, DSc, MSc, AGAF  more...
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Answer

The mechanisms through which cancer spreads to the lungs are direct extension and true metastatic spread through the bloodstream, airway, or lymphatic system. Iatrogenic implantation of a primary tumor is exceedingly rare.


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