Practice | Cases - Occupational hypersensitivity pneumonitis after polyurethane adhesive exposure

Hypersensitivity pneumonitis, formerly known as extrinsic allergic alveolitis, is a type of interstitial lung disease caused Figure 2: High-resolution computed tomography scan of the chest of a 47-year-old woman with hypersensitivity pneumonitis after treatment and by inhalation of antigens that induce nonimmunoglobulin (Ig) avoidance of the antigen, showing complete resolution of centrilobular E–. [...] Ontario Workplace Safety and Insurance Board (WSIB) and from the The lack of lymphocytosis on bronchoalveolar lavage could be Centre for Research Excellence in Occupational Diseases (supported by the Ontario Ministry of Labour and Development), royalties because of the early fibrosis noted on biopsy, as well as the (Asthma in the Workplace, 5th edition), consulting fees from the WSIB patient’s smo. [...] The onset of symptoms soon after start- and an honorarium from the Occupational Medicine Society of Can- ing work, and the dramatic improvement of symptoms with pred- ada. [...] She also reports committee membership with the American nisone treatment and avoidance of TDI further supported the diag- Academy of Allergy, Asthma and Clinical Immunology, and with the nosis. [...] Furthermore, given the timing of our patient’s symptoms, the conclusion that this was an occupa- Contributors: All of the authors contributed to the conception and design of the work, drafted the manuscript, revised it crit- tional exposure rather than exposure to an environmental aller- ically for important intellectual content, gave final approval of the gen outside of the workplace was quite cl.