title: [Organizing Pneumonia with High Radiotracer Concentration on Fluorodeoxyglucose-positron Emission Tomography, Mimicking Pleural Dissemination of Lung Cancer;Report of a Case].
abstract: A 68-year-old man was referred to our hospital because of an abnormal shadow in the chest roentgenogram. Chest computed tomography (CT) showed the nodule in the right upper lobe (S3), 17 mm in size. One month later, fluorodeoxyglucose-positron emission tomography (FDG-PET)/CT scanning revealed positive reaction in the right upper lobe lesion and new lesion close to another lobe. In addition, interloblar small nodules were detected, 5 mm and 7 mm in size. A transbronchial brush cytology by bronchoscopy was performed, and the microscopic findings demonstrated the presence of atypical cells, suspected adenocarcinoma. The video-assisted thoracoscopic surgery was performed to establish a diagnosis and a treatment. Histopathological examination showed no malignancy and organizing pneumonia with inflammation. In case of the PET-positive solitary nodule increasing in size, organizing pneumonia should be included in the differential diagnosis.
authors.affiliation: Department of Thoracic Surgery, National Hospital Organization Himeji Medical Center, Himeji, Japan.
authors.forename: Takahisa
authors.initials: T
authors.lastname: Matsuoka
authors.forename: Tetsu
authors.initials: T
authors.lastname: Yamada
authors.forename: Shinjiro
authors.initials: S
authors.lastname: Nagai
authors.forename: Katsunari
authors.initials: K
authors.lastname: Matsuoka
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Ueda
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Miyamoto
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008175:Lung Neoplasms / Q000150:complications / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D008297:Male; D064847:Multimodal Imaging; D010997:Pleural Neoplasms / Q000000981:diagnostic imaging*; D011013:Pneumonectomy; D011014:Pneumonia / Q000000981:diagnostic imaging* / Q000209:etiology; D049268:Positron-Emission Tomography; D014057:Tomography, X-Ray Computed
chemical_list: D019788:Fluorodeoxyglucose F18