The ILO classification of pneumoconiosis radiographs categorizes profusion of small opacities on a scale of:
- A 0 to 3 with subcategories (0/0 to 3/3) ✓
- B Stage I to Stage IV
- C Grade I to Grade V
- D A, B, and C
Correct answer: A. 0 to 3 with subcategories (0/0 to 3/3)
Explanation
The ILO (International Labour Organization) International Classification of Radiographs of Pneumoconioses uses a profusion scale from 0 to 3 with subcategories using both the dominant and adjacent categories (e.g., 0/0, 0/1, 1/0, 1/1, 1/2, 2/1, 2/2, 2/3, 3/2, 3/3), allowing 12 categories in total. This system standardizes the grading of dust-induced pulmonary changes for compensation and epidemiological purposes. Categories A, B, C refer to large opacities in complicated pneumoconiosis (PMF).
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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