%0 Case Reports
%T Diffusely distributed centrilobular micronodules and branching opacities as the main chest computed tomography manifestations in a patient with humidifier lung.
%A Nakane C
%A Teshima T
%A Otake R
%A Nakagawa E
%A Kishimoto E
%A Suzuki K
%A Inaba R
%A Murakami Y
%A Aoshima Y
%A Nishimoto K
%A Matsushima S
%A Harada M
%A Imokawa S
%J Respir Med Case Rep
%V 51
%N 0
%D 2024
%M 39022335
暂无%R 10.1016/j.rmcr.2024.102061
%X We report a 60-year-old man with humidifier lung showing diffusely distributed centrilobular micronodules and branching opacities on chest computed tomography (CT). Fever and dyspnea occurred 2 months after using an ultrasonic humidifier. KL-6 and SP-D were within normal ranges. Bronchoalveolar lavage showed elevated lymphocytes (53 %) and histological findings of transbronchial lung biopsy demonstrated organizing pneumonia. His condition improved after cessation of the humidifier. A provocation test exhibited a positive response to the humidifier. Humidifier lung should be considered as a differential diagnosis in patients with these CT findings. Detailed clinical, pathological and microbiological examinations are needed to exclude other diseases.