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Study Syllabus for Classification of Radiographs of Pneumoconioses						Print
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										Radiograph ClassificationSubset 2Radiograph #20
Answer Key #20 (Updated 9/28/2023)
This radiograph is that of a coal miner. Initial evaluation shows small rounded opacities, and large opacities. Detailed analysis then proceeds through the following sequence of decisions.
Radiograph quality is graded **2**due to scapula overlay and mottle. The parenchymal opacities are consistent with pneumoconiosis, so Section 2A is checked “YES.”
The primary small opacity is rounded and estimated to be of the **q** size; that is, 1.5 to 3.0 mm in diameter. The secondary small opacity is of the r size; that is, 3 to 10 mm in size. All zones are involved. Comparison of the radiograph with the ILO Standards shows the closest match to be with the q/q – 2/2 Standard, although a match with q/q – 1/1 is also a consideration. Thus Section 2B is classified as follows: **q/r**, both upper and middle zone involvement with a profusion of **2/1**.
In the right upper zones overlapping the first, second, and third anterior ribs are well-defined large opacities. These constitute a **B** large opacity; that is, the sum of the greatest dimensions of the large opacities is greater than 5 cm.
The costophrenic angles are not blunted, so the “NO” box is checked in 3C.
Other abnormalities are present, so in 4A the “YES” box is checked. The symbol di for distortion em for emphysema.SECTION 5Page 1 of 6RADIOGRAPH #21
							
					
							Last Reviewed:  April 26, 2023						Source: 	National Institute for Occupational Safety and Health
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        Syndicate homeStudy Syllabus for Classification of Radiographs of Pneumoconioses
Introductionplus icon
Preface
Appreciation to Contributors
Intent of the Self-study Syllbus
Getting Started
Clinical Overviewplus icon
Major Occupational Lung Diseasesplus icon
Pneumoconioses
Central Role of Diagnostic Imagingplus icon
Role of CT
Overview of Nonimaging Clinical Tools in Lung Disease Diagnosis
Appendix A
References
Pathology Overviewplus icon
Pulmonary Silicosis
Coal Workers’ Pneumoconiosis
Asbestos Pleuropulmonary Disease
Pathological-Clinical Correlations
References
Radiograph Classificationplus icon
SUBSET 1 – Radiograph Classification, #1 to #19plus icon
Introduction
Radiograph Identification
Section 1: Image Quality
Section 2: Parenchymal Abnormalities, #1 to #14
Section 3: Pleural Abnormalities, #15 to #19
Section 4: Any Other Abnormalities
Section 5
SUBSET 2 – Radiograph #20 to #27plus icon
Radiograph #20
Radiograph #21
Radiograph #22
Radiograph #23
Radiograph #24
Radiographs #25 to #27
SUBSET 3 – Radiograph #28 to #38plus icon
Radiographs #28 to #30
Radiographs #31 to #32
Radiographs #33 to #35
Radiographs #36 to #38
SUBSET 4 – Radiograph #39 to #46 (Small and Large Opacities)plus icon
Radiographs #39 to #40
Radiographs #41 to #42
Radiographs #43 to #44
Radiograph #45
Radiograph #46
SUBSET 5 – Classifications and Answer Keys, Radiographs #47 to #83
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