A Case of Acute Bird-related Hypersensitivity Pneumonitis in a Pigeon Breeder for Race

Yokoo, Keiki; Kitada, Junya; Nishikiori, Hirotaka; Yamada, Yuichi; Fujii, Masaru; Inomata, Sin-ichiro; Kudo, Kazumi; Chiba, Hirofumi; Shiratori, Masanori; Yamada, Gen; Takahashi, Hiroki

doi:10.7878/jjsogd.33.133

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“…Such conditions pose risk of developing chronic bird-related HP, although not all individuals develop it. Similar to our case, there have also been cases reported of acute bird-related HP triggered by sudden increases in the number of birds kept [ 23 ]. Also, bird-keeping was reported to increase the risk of onset of sarcoidosis [ 24 ], suggesting that substances related to bird keeping may serve as causative antigens or triggers of sarcoid granulomas.…”

Section: Discussionsupporting

confidence: 88%

Propionibacterium acnes-associated sarcoidosis complicated by acute bird-related hypersensitivity pneumonitis

et al. 2020

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Background The number of reports on sarcoidosis complicated by hypersensitivity pneumonitis (HP) is limited, and most describe cases complicated by chronic bird-related HP. Here, we present for the first time a case with Propionibacterium acnes-associated sarcoidosis complicated by acute bird-related HP. Case presentation A 62-year-old man with a past medical history of sarcoidosis was admitted to our department, and chest computed tomography showed diffuse ground-glass opacities, which appeared as he rapidly increased the number of pigeons he kept for a competition. Random transbronchial lung biopsy revealed well-formed non-caseating epithelioid granulomas, which contained positively stained substances on immunohistochemistry using the PAB antibody, a specific monoclonal antibody against P. acnes lipoteichoic acid. Poorly formed non-caseating granulomas without positively stained substances were also detected. Conclusion We describe the successful identification of this exceptionally rare case of sarcoidosis complicated by acute bird-related HP in which two morphologically and immunohistologically different types of granulomas were present in the same lung.

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Section: Discussionsupporting

confidence: 88%

Propionibacterium acnes-associated sarcoidosis complicated by acute bird-related hypersensitivity pneumonitis

et al. 2020

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A Case of Acute Bird-related Hypersensitivity Pneumonitis in a Pigeon Breeder for Race

Abstract: Keywords: pigeon for race, bird-related hypersensitivity pneumonitis, interstitial pneumonia, hypersensitivity pneumonitis,

Cited by 1 publication

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Propionibacterium acnes-associated sarcoidosis complicated by acute bird-related hypersensitivity pneumonitis

Propionibacterium acnes-associated sarcoidosis complicated by acute bird-related hypersensitivity pneumonitis

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