title: Nodular pulmonary amyloidosis.
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.
authors.affiliation: Department of General Thoracic Surgery, Toneyama National Hospital, Toyonaka, Osaka, Japan. tokunaga@surg1.med.osaka-u.ac.jp
authors.forename: Toshiteru
authors.initials: T
authors.lastname: Tokunaga
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Takeda
authors.forename: Noriyoshi
authors.initials: N
authors.lastname: Sawabata
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Inoue
authors.forename: Hajime
authors.initials: H
authors.lastname: Maeda
mesh_terms: D000368:Aged; D000686:Amyloidosis / Q000209:etiology / Q000473:pathology*; D001172:Arthritis, Rheumatoid / Q000150:complications / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D003074:Solitary Pulmonary Nodule / Q000209:etiology / Q000473:pathology*; D014057:Tomography, X-Ray Computed