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CT Characteristics of Pleural Plaques Related to Occupational or Environmental Asbestos Exposure from South Korean Asbestos Mines

Title
CT Characteristics of Pleural Plaques Related to Occupational or Environmental Asbestos Exposure from South Korean Asbestos Mines
Authors
Kim, YookyungMyong, Jun-PyoLee, Jeong KyongKim, Jeung SookKim, Yoon KyungJung, Soon-Hee
Ewha Authors
김유경이정경
SCOPUS Author ID
김유경scopus; 이정경scopus
Issue Date
2015
Journal Title
KOREAN JOURNAL OF RADIOLOGY
ISSN
1229-6929JCR Link2005-8330JCR Link
Citation
vol. 16, no. 5, pp. 1142 - 1152
Keywords
Pleural plaquesAsbestosComputed tomographyOccupational diseases
Publisher
KOREAN RADIOLOGICAL SOC
Indexed
SCIE; SCOPUS; KCI WOS scopus
Abstract
Objective: This study evaluated the CT characteristics of pleural plaques in asbestos-exposed individuals and compared occupational versus environmental exposure groups. Materials and Methods: This study enrolled 181 subjects with occupational exposure and 98 with environmental exposure from chrysotile asbestos mines, who had pleural plaques confirmed by a chest CT. The CT scans were analyzed for morphological characteristics, the number and distribution of pleural plaques and combined pulmonary fibrosis. Furthermore, the CT findings were compared between the occupational and environmental exposure groups. Results: Concerning the 279 subjects, the pleural plaques were single in 2.2% and unilateral in 3.6%, and showed variable widths (range, 1-20 mm; mean, 5.4 +/- 2.7 mm) and lengths (5-310 mm; 72.6 +/- 54.8 mm). The chest wall was the most commonly involved (98.6%), with an upper predominance on the ventral side (upper, 77.8% vs. lower, 55.9%, p < 0.001) and a Lower predominance on the dorsal side (upper, 74.9% vs. lower, 91.8%, p = 0.02). Diaphragmatic involvement (78.1%) showed a right-side predominance (right, 73.8% vs. left, 55.6%, p < 0.001), whereas mediastinal plaques (42.7%) were more frequent on the left (right, 17.6 /0 vs. Left, -39.4 /0, p < 0.001). The extent and maximum length of plaques, and presence and severity of combined asbestosis, were significantly higher in the occupational exposure group (p < 0.05). Conclusion: Pleural plaques in asbestos-exposed individuals are variable in number and size; and show a predominant distribution in the upper ventral and Lower dorsal chest walls, right diaphragm, and left mediastinum. Asbestos mine workers have a higher extent of plaques and pulmonary fibrosis versus environmentally exposed individuals.
DOI
10.3348/kjr.2015.16.5.1142
Appears in Collections:
의학전문대학원 > 의학과 > Journal papers
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