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Siderosis (Welder’s pneumoconiosis)

Reviewers: Elliot Weisenberg, M.D. (see Reviewers page)
Revised: 26 September 2011, last major update September 2011
Copyright: (c) 2003-2011, PathologyOutlines.com, Inc.


● Associated with iron workers and welders
● Welders exposed to fumes with metal oxide particles 0.1 to 1.0 um in diameter (iron, titanium, manganese and aluminum)
● Lungs usually heavily pigmented without significant fibrosis
● Aluminum (separate topic) has higher risk for significant pulmonary disease
● Concurrent cigarette smoking, asbestos exposure may complicate clinical and pathologic findings
Micro: dust within interstitium, usually iron predominates

End of Lung-nontumor > Pneumoconiosis > Siderosis (Welder’s pneumoconiosis)

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