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Between 1986 and 2004 18,211 individuals were examined. At the time of the first examination 9.6% of all participants (1,745) had findings consistent with parenchymal disease (ILO\u2009&gt;\u20091\/0), and 21% (3,827) had pleural scarring.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>2181\u2010Two thousand hundred eighty\u2010one who had no radiographic evidence of pneumoconiosis on baseline examination underwent a second examination.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>By the second examination, 5.3% had developed parenchymal disease on chest radiograph; an additional 12.4% had developed pleural scarring without parenchymal disease. Factors that predicted new cases of pneumoconiosis on radiograph were the calendar year the worker entered the sheet metal trade, smoking, and shipyard work. Forty\u2010seven percent of those smoking at the time of initial exam reported having quit smoking by the second examination.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Asbestosis is still occurring 50 years after first exposure. Exposed workers benefit from medical screening programs that incorporate smoking cessation. Am. J. Ind. Med. 52:519\u2013525, 2009. \u00a9 2009 Wiley\u2010Liss, Inc.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ajim.20712","type":"journal-article","created":{"date-parts":[[2009,5,28]],"date-time":"2009-05-28T12:42:09Z","timestamp":1243514529000},"page":"519-525","source":"Crossref","is-referenced-by-count":7,"title":["Asbestos\u2010related disease among sheet metal workers 1986\u20132004: Radiographic changes over time"],"prefix":"10.1002","volume":"52","author":[{"given":"Laura S.","family":"Welch","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elizabeth","family":"Haile","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2009,5,28]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1164\/rccm.200310-1436ST"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10552-005-0271-0"},{"key":"e_1_2_1_4_1","first-page":"187","article-title":"Asbestos\u2010related diseases of the lung and other organs: Their epidemiology and implications for clinical practice","volume":"114","author":"Becklake M","year":"1976","journal-title":"Am Rev Respir Dis"},{"key":"e_1_2_1_5_1","first-page":"23","article-title":"Radiological changes after withdrawal from asbestos exposure","volume":"36","author":"Becklake MR","year":"1979","journal-title":"Br J Ind Med"},{"key":"e_1_2_1_6_1","first-page":"994","article-title":"The natural history of asbestosis in former crocidolite workers of Wittenoom Gorge","volume":"133","author":"Cookson W","year":"1986","journal-title":"Am Rev Respir Dis"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1093\/aje\/kwi034"},{"key":"e_1_2_1_8_1","first-page":"127","article-title":"Comparison of chest radiograph reading methods for assessing progress of pneumoconiosis over 10 years in wittenoom crocidolite workers","volume":"47","author":"de Klerk NH","year":"1990","journal-title":"Br J Ind Med"},{"key":"e_1_2_1_9_1","first-page":"268","article-title":"Long term radiological effects of short term exposure to amosite asbestos among factory workers","volume":"49","author":"Ehrlich R","year":"1992","journal-title":"Br J Ind Med"},{"issue":"2","key":"e_1_2_1_10_1","first-page":"27","article-title":"Asbestos hazard in the Swedish construction industry\u2010recent trends in mesothelioma incidence","volume":"31","author":"Engholm G","year":"2005","journal-title":"Scand J Work Environ Health"},{"key":"e_1_2_1_11_1","volume-title":"Asbestos: Monograph on the evaluation of carcinogenic risk to man","author":"IARC","year":"1988"},{"key":"e_1_2_1_12_1","volume-title":"International classification of radiographs of pneumoconiosis","author":"ILO U\/C","year":"1980"},{"key":"e_1_2_1_13_1","volume-title":"Guidelines for the use of the ILO International Classification of Radiographs of Pneumoconioses","author":"International Labour Office","year":"2002"},{"key":"e_1_2_1_14_1","first-page":"97","article-title":"Progression of asbestos effects: A prospective longitudinal study of chest radiographs and lung function","volume":"46","author":"Jones RN","year":"1989","journal-title":"Br J Ind Med"},{"key":"e_1_2_1_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/14651858.CD000165.pub2"},{"key":"e_1_2_1_16_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1749-6632.1991.tb24438.x"},{"key":"e_1_2_1_17_1","doi-asserted-by":"publisher","DOI":"10.1097\/JOM.0b013e31802ec68c"},{"key":"e_1_2_1_18_1","first-page":"54","article-title":"Development of radiological and clinical evidence of parenchymal fibrosis in men with non\u2010malignant asbestos\u2010related pleural lesions","volume":"39","author":"McMillan GH","year":"1982","journal-title":"Br J Ind Med"},{"key":"e_1_2_1_19_1","first-page":"60","article-title":"Comparison of independent randomised reading of radiographs with direct progression scoring for assessing change in asbestos\u2010related pulmonary and pleural lesions","volume":"39","author":"McMillan GHG","year":"1982","journal-title":"Br J Ind Med"},{"key":"e_1_2_1_20_1","doi-asserted-by":"publisher","DOI":"10.1002\/ajim.4700130612"},{"key":"e_1_2_1_21_1","doi-asserted-by":"publisher","DOI":"10.1183\/09031936.05.00034805"},{"key":"e_1_2_1_22_1","unstructured":"National Institute for Occupational Safety and Health.2003.Work\u2010Related Lung Disease (eWoRLD) Surveillance System. 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