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Study Syllabus for Classification of Radiographs of Pneumoconioses						Print
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										Radiograph ClassificationSubset 1Section 2: Parenchymal Abnormalities (Continued)
2C. Large Opacities
2B. Small Opacities form sample
A **large opacity** is one having a longest dimension greater than 10 mm. Large opacities are classified individually and collectively as follows:
A = an opacity whose greatest diameter exceeds 10 mm. but is less than 50 mm, or several opacities each of which exceeds 10 mm. in diameter but the sum of whose greatest diameters does not exceed 50 mm.; B = a large opacity whose greatest diameter exceeds 50 mm. but whose area is not greater than the area of the right upper zone, or several large opacities the sum of whose greatest diameters exceeds 50 mm., but which when summed do not exceed an area equivalent to that of the right upper zone; and C = a large opacity whose area exceeds that of the right upper zone, or several large opacities whose areas when summed exceed the area of the right upper zone. Identification of a large pneumoconiotic opacity may be facilitated by recognition of a coexistent background of small pneumoconiotic opacities.RADIOGRAPHS #6 TO #10 (CON'T.)Page 7 of 8RADIOGRAPHS #11 TO #14
							
					
							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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