The ILO International Classification of Radiographs of Pneumoconioses is a system of Since , the ILO has periodically published guidelines on how to classify chest X-rays for pneumoconiosis. The purpose of the Classification was to. ILO Classification The International Labour Organization (ILO) is a specialized agency of the Radiograph showing Simple Coal Workers’ Pneumoconiosis. The object of the classification is to codify the radiographic . defect likely to impair classification of the radiograph of pneumoconiosis. 3, Poor.

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CDC – Chest Radiography: ILO Classification – NIOSH Workplace Safety and Health Topic

xlassification This revised edition of the Guidelines supplements the preceding edition with an entirely new Chapter 6. Occupational Safety and Health Series No.

Pleural thickening is present in the apices of the lung. Both types may occur together.

Category B — one or more opacities larger or more numerous than those in category A whose combined area does not exceed the equivalent of the right upper zone. Comments should be recorded pertaining to the classification of the radiograph, particularly if some other cause classifiication thought to be responsible for a shadow which could be thought og others to have been due to pneumoconiosis; also to identify radiographs for which the technical quality may have affected the reading materially.

It is important to identify whether the costophrenic angle is visible or not. Tools and Approaches Part V. Two types of pleural thickening of the chest wall are recognized: Clasisfication of pleural thickening is defined in terms of the maximum length of pleural involvement, or as the sum of maximum lengths, whether seen in profile or face-on.


Read times Last modified on Tuesday, 11 October The ILO does not take responsibility for content presented on this web portal that is presented in any language other than English, which is the language used for the initial production and peer-review of original content. Enlargement of hilar or mediastinal lymph nodes. The “B” reader certification examination [5] went into full operation in There are no features to be seen in a chest radiograph which are pathognomonic of dust exposure.

Sincethe ILO classificatuon periodically published guidelines on how to classify chest X-rays for pneumoconiosis. As regards pleural abnormalities, the group agreed that this classification would now be divided into three parts: Coalescence of small pneumoconiotic opacities.

The new radiographz in chapter 6 identifies principles for viewing digitally acquired images of the chest and covers effective acquisition, display and classificatuon of digital images. The presence Y or absence N of costophrenic angle obliteration is recorded separately from thickening over other areas, for the right R and left L thorax. The 22 standard radiographs pneumoconipsis been selected after international trials, in such a way as to illustrate the mid-categories standards of profusion of small opacities and to give examples of category A, B and C standards for large opacities.

In use, it provides a system for both epidemiological comparisons of many individuals exposed to dust and evaluation of an individual’s potential disease relative to established standards. Part of this programme is based on medical surveillance which includes the reading of thoracic radiographs to help diagnose this pneumoconiosis.


ILO International Classification of Radiographs of Pneumoconioses (digital format)

The classification does not imply legal definitions of pneumoconioses for compensation purposes, nor imply a level at which compensation is payable. National Institute for Occupational Safety and Health.

The film sets were new to coincide with the ILO Guidelines; the digital set is new and coincides with the Guidelines. It deals with parenchymal abnormalities small and large opacitiespleural changes, and other features associated, or sometimes confused, with occupational lung disease.

ILO Classification

The category of profusion is based on assessment of the concentration of opacities by comparison with the standard radiographs. The pleural thickening present in profile, is of width a, and extent 2.

The purpose is to describe and codify radiographic abnormalities of pneumoconioses in a simple, systematic, and reproducible manner. The zones in which the opacities are seen are recorded.


Note shrinkage in lower lung fields. Facebook Twitter Email Syndicate.

The pleural thickening present face on, is of indeterminate width, and extent 2. Final revisions to the latest edition were completed in ILO