For an even closer examination of the abnormal growth, a small sample is removed by either: a needle; a long thin tube; or surgery. This way, doctors can view it under a microscope to confirm the presence of cancer and to determine the kind of lung cancer.5
5. ICS. Understanding Cancer of the Lung. 2014 Edition. Available at: https://www.cancer.ie/sites/default/files/content-attachments/cancer_of_the_lung_2016_web.pdf. Accessed: 2 May 2019.