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Radiographic appearances of small opacities and their correlation with pathology grading of macules, nodules and dust burden in the lungs.

Authors
Attfield-MD; Vallyathan-V; Green-FHY
Source
Ann Occup Hyg, Inhaled Particles VII 1994 Jan; 38(Suppl 1):783-789
NIOSHTIC No.
20024875
Abstract
Radiographic appearances of small opacities were correlated with pathological assessments of whole lung sections in a series of autopsy cases from southern West Virginia. The results revealed correlations between the radiographic and pathologic data, mainly between micro- and macro-nodules and X-ray category (Pearson correlations close to 0.51), but reveal that moderate to severe pathologic abnormality has to be present before radiographic detection is at all certain. The presence of macules tended to be associated with the smallest radiographic opacities (type p), while nodules were often manifested as type q or r. Macule profusion was related to overall levels of total retained dust. while nodules and X-ray category were associated with both coal and silica fractions of the retained dust weights. Weight-for-weight, silica dust was 20 times more important than coal dust in the latter relationship.
Keywords
Radiography; Radiographic-analysis; Lung; Lung-tissue; Lung-function; Autopsies; Coal-dust; Silica-dusts; Respiratory-system-disorders; Respiratory-irritants; Pulmonary-system-disorders
Contact
Division of Respiratory Studies, National Insitute for Occupational Safety and Health. 944 Chestnut Ridge Road. Morgantown. WV 26505-2888. USA
CODEN
AOHYA3
Publication Date
19940101
Document Type
Journal Article
Editors
Dodgson-J; McCallum-RI
Fiscal Year
1994
NTIS Accession No.
NTIS Price
ISBN No.
0080408419
ISSN
0003-4878
NIOSH Division
DRDS
Source Name
Annals of Occupational Hygiene, Inhaled Particles VII
State
WV
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