ReviewInternal medicine (Tokyo, Japan)2026
Atypical Computed Tomography Findings of Non-fibrotic Hypersensitivity Pneumonia with Emphysema: A Case Report and Literature Review.
Review in Internal medicine (Tokyo, Japan), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Non-fibrotic hypersensitivity pneumonitis (HP) is typically diagnosed based on characteristic chest computed tomography (CT) findings; however, cases complicated by emphysema, while rare, are diagnostically challenging. A 73-year-old man with 1 month of dyspnea showed diffuse emphysema and ground-glass opacities on CT. He was diagnosed with non-fibrotic HP based on bronchoalveolar lavage and histological findings, spontaneous symptom resolution, and positive serum-precipitating antibodies. His CT findings were atypical due to extensive emphysema, with low-attenuation areas exceeding those of typical HP cases at our hospital. Non-fibrotic HP with emphysema may be overlooked, highlighting the need for careful clinical and radiological evaluations.
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