Table 7.1.8.

Requirements for attributing carcinoma of the lung to asbestos

The traditional view that the carcinoma complicates asbestosis	The Helsinki criteria,¹⁹² which are based upon substantial exposure
1 Asbestosis and 2 A minimum lag time of 20 years	1 Asbestosis diagnosed clinically, radiologically or histologically or A minimum count of 5000 asbestos bodies per gram dry lung tissue (/g dry), or an uncoated asbestos fibre burden of 2 million amphibole fibres more than 5 µm in length/g dry, or 5 million amphibole fibres more than 1 µm in length/g dry or Estimated cumulative exposure to asbestos of at least 25 fibres/ml-years or An occupational history of 1 year of heavy exposure to asbestos (e.g. manufacture of asbestos products, asbestos spraying) or 5–10 years of moderate exposure (e.g. construction or ship-building) and 2 A minimum lag time of 10 years

The traditional view that the carcinoma complicates asbestosis

The Helsinki criteria,¹⁹² which are based upon substantial exposure

1
Asbestosis diagnosed clinically, radiologically or histologically

or
A minimum count of 5000 asbestos bodies per gram dry lung tissue (/g dry), or an uncoated asbestos fibre burden of 2 million amphibole fibres more than 5 µm in length/g dry, or 5 million amphibole fibres more than 1 µm in length/g dry

or
Estimated cumulative exposure to asbestos of at least 25 fibres/ml-years

or
An occupational history of 1 year of heavy exposure to asbestos (e.g. manufacture of asbestos products, asbestos spraying) or 5–10 years of moderate exposure (e.g. construction or ship-building)

and
2
A minimum lag time of 10 years