title: Wood Dust and Formaldehyde (Medicine)
author: The International Agency for Research on Cancer
description: The International Agency for Research on Cancer (IARC) is part of the World Health Organization. IARC's mission is to coordinate and conduct research on the causes of human cancer, the mechanisms of carcinogenesis, and to develop scientific strategies for cancer control. The Agency is involved in both epidemiological and laboratory research and disseminates scientific information through publications, meetings, courses, and fellowships.
zlib_text: FORMALDEHYDE (GAS) 
  CAS No. 50-00-0 
  First Listed in the Second Annual Report on Carcinogens 
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  CARCINOGENICITY 
  Formaldehyde (gas) is reasonably anticipated to be a human carcinogen based on limited 
  evidence of carcinogenicity in humans and sufficient evidence of carcinogenicity in experimental 
  animals (IARC 1982, 1987, 1995). 
  Excess incidences of nasopharyngeal cancers were observed in two of six cohort studies, 
  three of four case-control studies, and in meta-analyses. In addition, two of three case-control 
  studies showed a positive association between occupational exposure to formaldehyde and 
  squamous-cell carcinomas of the nasal cavities and paranasal sinuses. Three other case-control 
  studies examined cancer (unspecified cell type) of the nasal cavity and paranasal sinuses; two
  studies presented negative results, but one showed weak positive results. The overall observed 
  incidences of cancers of the nasal cavities and paranasal sinuses in occupational cohorts were