Editing Lung (section)

===Cancers===
<!-- Cancer-->[[Lung cancer]] can either arise directly from lung tissue or as a result of [[metastasis]] from another part of the body. There are two main types of primary tumour described as either [[small-cell lung carcinoma|small-cell]] or [[non-small-cell lung carcinoma]]s. The major risk factor for cancer is [[tobacco smoking|smoking]]. Once a cancer is identified it is [[tumour staging|staged]] using scans such as a [[CT scan]] and a sample of tissue from a [[biopsy]] is taken. Cancers may be treated surgically by removing the tumour, the use of [[radiotherapy]], [[chemotherapy]] or a combination, or with the aim of [[palliative care|symptom control]].<ref name=DAVIDSONS2014 /> [[Lung cancer screening]] is being recommended in the United States for high-risk populations.<ref>{{cite web |url=http://www.uspreventiveservicestaskforce.org/uspstf/uspslung.htm |title=Lung Cancer Screening |year=2013 |publisher=[[United States Preventive Services Task Force|U.S. Preventative Services Task Force]] |access-date=2016-07-10 |archive-url=https://web.archive.org/web/20101104055403/http://www.uspreventiveservicestaskforce.org/uspstf/uspslung.htm |archive-date=2010-11-04 |url-status=dead }}</ref>