Standard ILO chest radiograph of large "B" nodular opacities

This is a standard International Labour Organization (ILO) radiograph demonstrating bilateral upper lung zone large nodular opacities designated category "B" for >50 mm but not larger than size of right upper lung zone.

Reproduced with permission from: Guidelines for the use of the ILO International Classification of Radiographs of Pneumoconioses: ILO Standard Digital Images (ILO 2011-D) in DICOM Format. Copyright © 2011 International Labour Organization. Available at: http://www.ilo.org/safework/info/publications/WCMS_168337/lang--en/index.htm.

Graphic 91560 Version 1.0

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