Computed tomography for diagnosis and grading of dust-induced occupational lung disease

Blum, Torsten; Kollmeier, Jens; Ott, Sebastian Robert; Serke, Monika; Schönfeld, Nicolas; Bauer, Torsten T.

doi:10.1097/mcp.0b013e3282f5248e

Cited by 7 publications

(4 citation statements)

References 37 publications

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“…Radiological imaging plays an important role in the diagnosis of silicosis and asbestosis. Although it has some limitations in terms of detecting the earliest findings of pleural and parenchymal lung abnormalities 6) , chest radiographs remain the most important method of chest imaging, providing an easily accessible, cheap and effective diagnostic tool 7,8) which is the basic tool for identifying occupational and environmental lung diseases 9) . On radiographs, anatomical parenchymal structures are seen as overlapping, which affects the sensitivity and specificity of the method; it is sometimes difficult, especially for inexperienced physicians, to distinguish pleural plaque on plain chest radiograph from mimicking shadows, such as rib-companion shadows, serratus anterior and oblique externus abdominis muscles and extra-pleural fat.…”

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confidence: 99%

Effect of a Two‐hour Training on Physicians' Skill in Interpreting Pneumoconiotic Chest Radiographs

Ngatu

Suzuki

Kusaka

et al. 2010

Journal of Occupational Health

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Effect of a Two-hour Training on Physicians' Skill in Interpreting PneumoconioticChest Radiographs: Nlandu Roger NGATU, et al. Department of Environmental Medicine, KochiMedical School, Kochi University-Objective: Occupational lung diseases have specific radiographic manifestations not always well known by physicians. In Japan, asbestos-related diseases became a public health concern after the "Kubota Shock", when a number of workers and residents living nearby a manufacturer of asbestos-made ducts developed mesothelioma caused by asbestos exposure. This preliminary intervention trial evaluated the effect of twohour training on inexperienced physicians' skill in interpreting pneumoconiotic chest radiographs. Methods: One hundred-two Japanese physicians participated in two reading-tests, using 12 radiographs, before and after the two-hour training with ILO/ICRP and Japan Pneumoconioses Study Group (JPSG) reading materials. Physicians had to check for the presence or absence of small opacity and pleural plaque consistent with pneumoconiosis. Sensitivity and specificity equal or greater than 70% were considered good, 50 to 69% acceptable and less than 50%, poor. Results: Post-training improvements in physicians' skills were seen. For small opacity, there was an increase in the proportion of physicians with good specificity, from 42% to 60%. For pleural plaque, the proportion of physicians with good specificity and good sensitivity increased, from 60% to 67% and from 18% to 25%, respectively. Also, significant improvements were observed in overall sensitivity for pleural plaque, from 46% to 60% (p<0.0001), and specificity for small Field Studyopacity, from 65% to 73% (p<0.0001). Conclusions: This study showed that two-hour participatory training may enhance physicians' skill in interpreting pneumoconiotic chest radiographs. There are countries without any pneumoconiosis screening program despite the WHO/ILO call for worldwide cooperation in eliminating it. Although the two-hour course cannot replace the five-day ILO workshop, such a program would be useful in areas with environmental or occupational exposure to dust. (J Occup Health 2010; 52: 294-301)

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confidence: 99%

Effect of a Two‐hour Training on Physicians' Skill in Interpreting Pneumoconiotic Chest Radiographs

Ngatu

Suzuki

Kusaka

et al. 2010

Journal of Occupational Health

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“…CT and HRCT are commonly used to evaluate pulmonary fi ssures (17)(18)(19)(20)(21). HRCT is useful for the noninvasive diagnosis of dust-associated lung disease (22). Nevertheless, conventional chest radiography has several advantages over CT and HRCT.…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, conventional chest radiography has several advantages over CT and HRCT. After a complete medical history, conventional chest radiography is one of the initial steps used for diagnosing dust-associated lung diseases because of its low cost, low level of exposure to radiation, and wide range of uses (22,23). Several studies have used conventional chest X-rays to study fi ssures; for example, Gülekon et al (24) and Abiru et al (25) investigated the incidence of accessory fi ssures on lung X-rays using posterior-anterior (PA) direct X-ray assessment of the fi ssure.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the oblique fissure on lateral chest radiographs in coal workers pneumoconiosis

Kaçar¹,

Doğan²,

Barut³

2013

BLL

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Abstract:Objective: The oblique fi ssure separates the upper lobe from the lower lobe in the left lung and the upper lobe from the lower and middle lobes in the right lung. The aim of the present study was to compare the projection of the oblique fi ssure observed on lateral chest radiographs of retired coal mine workers who had coal worker's pneumoconiosis (CWP) with that of healthy men. Materials and methods:The study included 120 men divided into three groups: retired coal miner patients diagnosed with CWP (group 1), men ≥38 years of age with no CWP (group 2, fi rst control group), and men ≤37 years of age with no CWP (group 3, second control group). The projection of the oblique fi ssure observed on lateral chest radiographs (left side) were evaluated using geometric morphometrics. Geometric morphometric analysis of each sample was performed using 11 pre-specifi ed landmarks designated on X-ray images, using tpsDig2 software. A text fi le containing the landmark coordinates of the 120 samples was created, and the data in the text fi le was statistically analyzed using Morpheus software. Results: The projection of the oblique fi ssure differed signifi cantly between the CWP patients and the control groups (p<0.05). Conclusion:We suggest that the difference in the projection of the oblique fi ssure between men with and without CWP was attributable to a protrusion in the fi ssure caused by nodules that developed in the lungs of coal miners after years of dust inhalation (Tab. 4, Fig. 4, Ref. 30 The International Labor Organization has defi ned pneumoconiosis as the accumulation of dust in the lungs and secondary tissue reactions to its presence (1). Larger inhaled dust particles are retained in the nose, trachea, or large bronchi by respiratory mechanisms. However, dust particles with diameters of 1-5 μm can reach the pulmonary parenchyma. As the dust load in the parenchyma increases with continued dust inhalation, particles accumulate in the alveoli (2).The oblique fi ssure separates the upper lobe from the lower lobe in the left lung and the upper lobe from the lower and middle lobes in the right lung. Lateral examination of the lungs shows that the oblique fi ssure originates at the level of the fourth thoracic vertebra posteriorly and extends forward in an oblique manner in both lungs. Because the left lung is longer than the right lung, the fi ssure extends more vertically on the left (3). The aim of the present study was to compare the projection of the oblique fi ssure on lateral chest radiographs of men who retired from coal mining following the development of coal worker's pneumoconiosis (CWP) and that of healthy control subjects, using geometric morphometrics. Materials and methodsThe study analyzed lateral chest radiographs obtained from 120 men, who were divided into three groups: patients diagnosed with CWP while working in coal mines (group 1; n=62); men ≥38 years of age without CWP (group 2, fi rst control group; n=31); and men ≤37 years of age without CWP (group 3, second control group; n=27).La...

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“…Pneumoconioses have relatively specific radiologic features that are not well-known to most physicians. Radiological imaging plays an important role in the diagnosis of those occupational lung diseases, including asbestos-related diseases, Silicosis and coal worker's pneumoconiosis (Ngatu et al, 2010;Blum et al, 2008). This review is aimed at providing health care workers, especially clinicians, with basic and accurate knowledge on principal radiologic features often found on a pneumoconiotic chest radiograph that characterize each of the above mentioned lung diseases related to occupational or environmental exposure to dust.…”

Section: Overview On Pneumoconiosesmentioning

confidence: 99%

Lung Diseases - Selected State of the Art Reviews

Irusen¹

2012

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Computed tomography for diagnosis and grading of dust-induced occupational lung disease

Abstract: High-resolution computed tomography is a powerful diagnostic and prognostic tool for assessment of dust-induced occupational lung diseases in compliance with promising recent findings. Novel evidence, however, is limited for these occupational diseases.

Cited by 7 publications

References 37 publications

Effect of a Two‐hour Training on Physicians' Skill in Interpreting Pneumoconiotic Chest Radiographs

Effect of a Two‐hour Training on Physicians' Skill in Interpreting Pneumoconiotic Chest Radiographs

Evaluation of the oblique fissure on lateral chest radiographs in coal workers pneumoconiosis

Lung Diseases - Selected State of the Art Reviews

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