Pleural plaque profiles on the chest radiographs and ct scans of asbestos-exposed Japanese construction workers

Momen Elshazley, Eiji Shibata, Naomi Hisanaga, Gaku Ichihara, Ashraf A. Ewis, Michihiro Kamijima, Sahoko Ichihara, Kiyoshi Sakai, Mitsuo Sato, Masashi Kondo, Yoshinori Hasegawa

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Pleural plaques are asymptomatic focal thickenings of the pleura and considered the hallmark of asbestos exposure. However, it is often difficult to detect pleural plaques on chest x-rays (CXR). In a retrospective study, using chest CT scans of 140 Japanese asbestos-exposed construction workers who have probable or definite findings of pleural plaque on CXR; firstly, we proposed plaque morphology-based classification for CXR findings, and then we examined if those classified findings could be confirmed as pleural plaques on CT scans. Our morphology-based classification of pleural plaque findings included nine types. The percentages of confirmed pleural plaques on CT scans by type (number of confirmed pleural plaque on CT/number of observed on CXR) were 93% (40/43) for straight, 89% (56/63) for diamond, 88% (7/8) for double, 83% (19/23) for tapered medially, 80% (20/25) for parallel, 77% (23/30) for crescent, 79% (11/14) for tenting, 72% (18/25) for tapered-laterally (long type), and 0% (0/9) for tapered-laterally (short type). When added to the ILO classification, morphology-based classification of CXR pleural plaque findings makes its detection easier and hence chest radiograph continues to be a suitable tool for screening asbestos-related pleural plaques based on its simplicity, low radiation exposure, wide availability and cost-effectiveness.

Original languageEnglish
Pages (from-to)626-633
Number of pages8
JournalIndustrial Health
Volume49
Issue number5
DOIs
Publication statusPublished - 24-10-2011

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Asbestos
Thorax
X-Rays
Diamond
Pleura
Cost-Benefit Analysis
Retrospective Studies

All Science Journal Classification (ASJC) codes

  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

Cite this

Elshazley, M., Shibata, E., Hisanaga, N., Ichihara, G., Ewis, A. A., Kamijima, M., ... Hasegawa, Y. (2011). Pleural plaque profiles on the chest radiographs and ct scans of asbestos-exposed Japanese construction workers. Industrial Health, 49(5), 626-633. https://doi.org/10.2486/indhealth.MS1268
Elshazley, Momen ; Shibata, Eiji ; Hisanaga, Naomi ; Ichihara, Gaku ; Ewis, Ashraf A. ; Kamijima, Michihiro ; Ichihara, Sahoko ; Sakai, Kiyoshi ; Sato, Mitsuo ; Kondo, Masashi ; Hasegawa, Yoshinori. / Pleural plaque profiles on the chest radiographs and ct scans of asbestos-exposed Japanese construction workers. In: Industrial Health. 2011 ; Vol. 49, No. 5. pp. 626-633.
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Elshazley, M, Shibata, E, Hisanaga, N, Ichihara, G, Ewis, AA, Kamijima, M, Ichihara, S, Sakai, K, Sato, M, Kondo, M & Hasegawa, Y 2011, 'Pleural plaque profiles on the chest radiographs and ct scans of asbestos-exposed Japanese construction workers', Industrial Health, vol. 49, no. 5, pp. 626-633. https://doi.org/10.2486/indhealth.MS1268

Pleural plaque profiles on the chest radiographs and ct scans of asbestos-exposed Japanese construction workers. / Elshazley, Momen; Shibata, Eiji; Hisanaga, Naomi; Ichihara, Gaku; Ewis, Ashraf A.; Kamijima, Michihiro; Ichihara, Sahoko; Sakai, Kiyoshi; Sato, Mitsuo; Kondo, Masashi; Hasegawa, Yoshinori.

In: Industrial Health, Vol. 49, No. 5, 24.10.2011, p. 626-633.

Research output: Contribution to journalArticle

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AU - Elshazley, Momen

AU - Shibata, Eiji

AU - Hisanaga, Naomi

AU - Ichihara, Gaku

AU - Ewis, Ashraf A.

AU - Kamijima, Michihiro

AU - Ichihara, Sahoko

AU - Sakai, Kiyoshi

AU - Sato, Mitsuo

AU - Kondo, Masashi

AU - Hasegawa, Yoshinori

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Y1 - 2011/10/24

N2 - Pleural plaques are asymptomatic focal thickenings of the pleura and considered the hallmark of asbestos exposure. However, it is often difficult to detect pleural plaques on chest x-rays (CXR). In a retrospective study, using chest CT scans of 140 Japanese asbestos-exposed construction workers who have probable or definite findings of pleural plaque on CXR; firstly, we proposed plaque morphology-based classification for CXR findings, and then we examined if those classified findings could be confirmed as pleural plaques on CT scans. Our morphology-based classification of pleural plaque findings included nine types. The percentages of confirmed pleural plaques on CT scans by type (number of confirmed pleural plaque on CT/number of observed on CXR) were 93% (40/43) for straight, 89% (56/63) for diamond, 88% (7/8) for double, 83% (19/23) for tapered medially, 80% (20/25) for parallel, 77% (23/30) for crescent, 79% (11/14) for tenting, 72% (18/25) for tapered-laterally (long type), and 0% (0/9) for tapered-laterally (short type). When added to the ILO classification, morphology-based classification of CXR pleural plaque findings makes its detection easier and hence chest radiograph continues to be a suitable tool for screening asbestos-related pleural plaques based on its simplicity, low radiation exposure, wide availability and cost-effectiveness.

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