Clinical & Medico-legal Notice: This application is a structured decision-support tool based on the
ILO International Classification of Radiographs of Pneumoconioses (Revised Edition 2011/2022).
It assists, but does not replace, the independent professional judgment of a NIOSH-certified B Reader or equivalent qualified
radiologist/occupational physician. All classifications must be performed by reference to the official ILO Standard Reference Radiographs.
The generated report is a draft for the reader's review, electronic signature, and quality assurance prior to clinical or legal use.
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Patient & Radiograph Identification
ILO Section 2A2
Radiograph Viewer
PA chest radiograph requiredUpload chest radiograph — click or drag a JPEG/PNG image here
Supported: JPG, PNG. Display at full PA size with viewing distance adequate for fine-detail assessment.
3
Technical Quality of the Radiograph
ILO Section 2A.24
Parenchymal Abnormalities — Small Opacities
ILO Section 2BA. Are small opacities present?
B. Shape & Size — Primary
Predominant small opacity type that occupies the greatest area in the affected zones.
Rounded
Irregular
C. Shape & Size — Secondary
A secondary type recorded only when sufficient numbers of a second type are present.
D. Profusion (12-point scale)
Concentration of small opacities in affected lung zones, compared with ILO Standard Reference Radiographs.
The first numeral is the chosen category; the second is the alternative seriously considered. Profusion ≥ 1/0 meets the ILO threshold for radiographic pneumoconiosis.
E. Affected Zones
Each lung is divided into upper (U), middle (M), and lower (L) zones. Select zones with opacities at or above 1/0.
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Parenchymal Abnormalities — Large Opacities
ILO Section 2B (PMF)Large opacity = any opacity greater than 10 mm. Record largest dimension and whether it crosses zones. Progressive Massive Fibrosis (PMF) corresponds to categories B and C.
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Pleural Abnormalities
ILO Section 2CA. Pleural Plaques
| Site | Present | Laterality | Calcification | Extent (max length) | Width (max) |
|---|---|---|---|---|---|
| Chest wall — in profile | |||||
| Chest wall — face on | — | ||||
| Diaphragm | — | ||||
| Other sites (mediastinal, pericardial) | — | ||||
B. Costophrenic Angle Obliteration
C. Diffuse Pleural Thickening
Diagnosed only when associated with costophrenic angle obliteration on the same side.
| Side | Present | Calcification | Extent | Width |
|---|---|---|---|---|
| Right | ||||
| Left |
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Symbols — Other Features
ILO Section 2D — select all applicable8
Comments & Recommendations
Free-text findings9