This report, based on a meta-analysis of 27 publications, suggests that silicosis is related to the risk of lung cancer even among non-smokers.
Evidence from:
Y Lacasse et al. Scand J Work Environ Health (2005) Vol.31(6) p 450 – 458
“Meta-analysis of silicosis and lung cancer”
In general it has been found that the more severe the silicosis the higher the risk of lung cancer.
further detail: