Lung Cancer (C33-C34): 2011 Proportion of Cases Diagnosed at Each Stage, Adults (Aged 15-99), England and Wales Stage Adults Stage I 14.5% Stage II 7.3% Stage III 31.8% Stage IV 35.8% Stage Not Known 10.6% All Stages 100.0% Please include the citation provided in our Frequently Asked Questions when reproducing this table: http://info.cancerresearchuk.org/cancerstats/faqs/#How Prepared by Cancer Research UK Original data source: Health and Social Information Centre. National lung cancer audit report 2012 (report for the audit period 2011). Leeds; 2012. http://www.hscic.gov.uk/