Written by: Emily Downward | Last reviewed: January 2017.
- American Cancer Society. Accessed online on 9/9/16 at http://www.cancer.org/cancer/lungcancer-non-smallcell/detailedguide/non-small-cell-lung-cancer-diagnosis
- Medscape. Accessed online on 9/12/16 at http://emedicine.medscape.com/article/279960-workup#c11
- NCCN Guidelines for Patients. Lung Cancer Screening. Version Accessed online on 8/31/16 at https://www.nccn.org/patients/guidelines/lung_screening/.
- Petty TL. Sputum cytology for the detection of early lung cancer. Curr Opin Pulm Med. 2003 Jul;9(4):309-12.