Hypersensitivity pneumonitis in a machinist

Andrew Freeman, James Lockey, Philip Hawley, Paul Biddinger, Douglas Trout

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Hypersensitivity pneumonitis (HP), or extrinsic allergic alveolitis, is a patchy, interstitial lung disease that involves an immunologic reaction of the lung to repeated inhalation of foreign antigens. In this report, we describe a machinist with exposure to metalworking fluids (MWFs) and biopsy- confirmed HP. Return to work, which could be equated with a retrospective workplace-specific bronchoprovocation test, proved that working within an environment in which MWFs were used was associated with clinical deterioration in the patient's pulmonary status and with clinical improvement after removal from exposure.

Original languageEnglish (US)
Pages (from-to)387-392
Number of pages6
JournalAmerican Journal of Industrial Medicine
Issue number4
StatePublished - Oct 1 1998


  • Aerosols
  • Case report
  • Extrinsic allergic alveolitis
  • Hypersensitivity pneumonitis
  • Metal working fluids

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health


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