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

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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

All Science Journal Classification (ASJC) codes

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

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    Elshazley, M., Shibata, E., Hisanaga, N., Ichihara, G., Ewis, A. A., 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, 49(5), 626-633. https://doi.org/10.2486/indhealth.MS1268