Lung Cancer | Asthma Foundation New Zealand

Lung Cancer What is it? Our bodies are made up of tiny cells, which normally repair and reproduce themselves. Sometimes, however, they develop in an abnormal way forming lumps or tumours. Lung cancer is cancer of some of the cells in part of the lungs, usually beginning in the lining of the airway.

Primary lung cancer is cancer that originated or started in the lungs. Secondary lung cancer is cancer that has started somewhere else in the body (bowel or breast for instance) and spread to the lungs.

http://asthmafoundation.org.nz/your-health/other-respiratory-conditions/lung-cancer/