Comparison of independent randomised reading of radiographs with direct progression scoring for assessing change in asbestos-related pulmonary and pleural lesions.

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Abstract
Direct scoring of progression of pleural and parenchymal lesions was compared with change assessed by independent readings to the ILO [International Labor Office] classification among 155 men from HM Dockyard, Devonport [UK], followed up for 10 yr. For pleural calcification the 2 methods agreed closely; direct scoring yielded relatively too little progression of small opacities and too much progression of pleural thickening. The choice of method for assessing progression should depend on objectives.