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Study Syllabus for Classification of Radiographs of Pneumoconioses						Print
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										Radiograph ClassificationSubset 2Radiograph #25
Answer Key #25 [PDF – 493 KB]
An example of **ax** is seen in the right first anterior interspace overlapping the right second anterior rib at its midportion. The small rounded opacities making up this **ax** have identifiable margins, unlike the more homogeneous appearance of the large opacities that are also present. The large opacities seen are consistent with those of pneumoconiosis, since a background of small opacities is also present. The prominent left hilum is appropriately indicated with the symbol hi.
Radiograph #26
Answer Key #26 [PDF – 493 KB]
Normal intercostal muscle shadows are well illustrated in this radiograph and should not be confused with pleural plaque. Note the slightly obliquely oriented soft-tissue margins best seen over the right anterolateral 6th and 7th ribs.
Radiograph #27
Answer Key #27 [PDF – 493 KB]
Examples of **ax** are seen in the upper zones bilaterally (short arrow) where small opacities demonstrate coalescence, with still-identifiable margins for the small opacities. There is also early formation of size **A** large opacities (long arrows) arising near the peripheral margins of both upper zones. Their combined longest dimensions suggest size **B** classification. Note the symbol di should be checked due to loss of volume in the right and left upper lobes. Symbol hi also should be checked to indicate hilar enlargement.RADIOGRAPH #24Page 6 of 6SUBSET 3
							
					
							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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