Related Experiment Video
Updated: Jul 19, 2026

Refined Murine Model of Idiopathic Pulmonary Fibrosis
Published on: June 17, 2025
Nodular pulmonary amyloidosis
Toshiteru Tokunaga1, Shin-ichi Takeda, Noriyoshi Sawabata
1Department of General Thoracic Surgery, Toneyama National Hospital, Toyonaka, Osaka, Japan. tokunaga@surg1.med.osaka-u.ac.jp
Abstract:
A 72-year-old woman with a diagnosis of suspected rheumatoid arthritis was admitted with multiple pulmonary nodules in the bilateral lung field. To obtain a diagnosis, a nodule was resected using video-assisted thoracic surgery. Microscopically, amorphous eosinophilic acellular substances were surrounded by inflammatory infiltrates, which were confirmed to be amyloid deposits by congo red staining. Thus, a diagnosis of pulmonary amyloidosis was obtained. The clinical features and diagnostic process are discussed.
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