title: Pet Groomer's Lung: A novel occupation related hypersensitivity pneumonitis related to pyrethrin exposure in a pet groomer.
abstract: A 61-year-old man was evaluated for a 2 month history of cough and dyspnea without relevant exposures other than pyrethrin containing insecticidal sprays he used while grooming dogs almost daily. High Resolution Computed Tomography (HRCT) of the chest demonstrated a Non-Specific Interstitial Pneumonia (NSIP) pattern. Pulmonary function testing revealed an isolated mildly reduced diffusion capacity. Bronchoalveolar lavage (BAL) results confirmed the presence of foamy histiocytes, lymphocytes, and polymorphonuclear cells consistent with ongoing exposure. Open lung biopsy showed poorly formed granulomas and bronchiolitis. He was advised to avoid exposure to pyrethrin. While he declined to stop grooming dogs, on follow-up, his symptoms had improved with use of a P100 mask and better ventilation to protect himself when using the pet sprays. We conclude that sustained exposure to pyrethrin containing sprays in the pet grooming industry may be a risk factor for a novel occupation related hypersensitivity pneumonitis. ("Pet Groomer's Lung"). Am. J. Ind. Med. 60:141-145, 2017. © 2016 Wiley Periodicals, Inc.
authors.affiliation: John H. Stroger Hospital of Cook County, Chicago, Illinois.
authors.forename: Chan Yeu
authors.initials: CY
authors.lastname: Pu
authors.affiliation: Department of Pathology, University of Illinois, Chicago, Illinois.
authors.forename: Mohamed Rizwan Haroon Al
authors.initials: MR
authors.lastname: Rasheed
authors.affiliation: John H. Stroger Hospital of Cook County, Chicago, Illinois.
authors.forename: Marin
authors.initials: M
authors.lastname: Sekosan
authors.affiliation: John H. Stroger Hospital of Cook County, Chicago, Illinois.
authors.forename: Vibhu
authors.initials: V
authors.lastname: Sharma
mesh_terms: D000542:Alveolitis, Extrinsic Allergic / Q000139:chemically induced* / Q000000981:diagnostic imaging; D000818:Animals; D006801:Humans; D019570:Inhalation Exposure / Q000009:adverse effects*; D007306:Insecticides / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000139:chemically induced* / Q000000981:diagnostic imaging; D057805:Pets; D011722:Pyrethrins / Q000009:adverse effects*
chemical_list: D007306:Insecticides; D011722:Pyrethrins
keywords: hypersensitivity pneumonitis; occupational; pet groomer; pyrethrin