An exploratory epidemiological study of Langerhans cell histiocytosis

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We explored potential risk factors associated with Langerhans cell histiocytosis (LCH) in a predominantly Hispanic population in Los Angeles. Sixty children with LCH (cases) and, 150 randomly selected patients (controls) were interviewed. There was no statistically significant difference between cases and controls in the following: Family history of thyroid disease, smokers in the family, maternal problems during pregnancy, and pesticide exposure. Cases were more likely to report a family history of cancer (OR 2.5), infection during infancy (OR 2.76), and parental occupational exposure to metal, granites, or wood dust (OR 2.48). Pediatr Blood Cancer 2012; 59: 1324–1326. © 2012 Wiley Periodicals, Inc.

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