Ilo4/16/2023 ![]() ![]() ![]() They are then asked to categorize small opacities according to shape and size. In the present manifestation of the ILO system, the reader is first asked to grade film quality. It deals with parenchymal abnormalities (small and large opacities), pleural changes, and other features associated, or sometimes confused, with occupational lung disease. The system is oriented towards describing the nature and extent of features associated with the different pneumoconioses, including coal workers’ pneumoconiosis, silicosis, and asbestosis. The standard films represent different types and severity of abnormalities and are used for comparison to subject films during the classification process. The Classification System includes the Guidelines and two sets of standard films. Final revisions to the latest edition were completed in 2011 (ILO 2011). The purpose is to describe and codify radiographic abnormalities of pneumoconioses in a simple, systematic, and reproducible manner. Since 1950, the ILO has periodically published guidelines on how to classify radiographs for pneumoconioses external icon. The ILO is the Organization’s research body and publishing house. The International Labour Organization (ILO) is a specialized agency of the United Nations that seeks to promote social justice and internationally recognized human and labor rights external icon.
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