title: [Solitary pulmonary nodule due to Mycobacterium intracellulare showing intense uptake on 18F-fluorodeoxyglucose-positron emission tomography].
abstract: A 71-year-old woman with no respiratory symptoms, was admitted because of a solitary pulmonary nodule on a chest radiograph. Computed tomography revealed a 2.0 cm nodule with pleural indentation in the right S2. 18F-fluorodeoxyglucose-positron emission (18F-FDG-PET) showed positive tumor uptake (maximum standardized uptake value = 4.8). Bronchoscopy yielded no specific histological or bacterial findings. Lung biopsy using video-associated thoracoscopy revealed an epithelial granuloma with caseation, but no acid-fast bacilli were detected. PCR revealed Mycobacterium intracellulare (M. intracellulare). A solitary nodule caused by M. intracellulare is rare, but it should be considered in the differential diagnosis even with intense uptake on 18F-FDG-PET.
authors.affiliation: Department of Pulmonary Medecine, School of Medicine, Fukushima Medical University.
authors.forename: Naoko
authors.initials: N
authors.lastname: Nakagawa
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Tanino
authors.forename: Yayoi
authors.initials: Y
authors.lastname: Inokoshi
authors.forename: Suguru
authors.initials: S
authors.lastname: Sato
authors.forename: Taeko
authors.initials: T
authors.lastname: Ishii
authors.forename: Kazue
authors.initials: K
authors.lastname: Saito
authors.forename: Atsuro
authors.initials: A
authors.lastname: Fukuhara
authors.forename: Kenya
authors.initials: K
authors.lastname: Kanazawa
authors.forename: Junpei
authors.initials: J
authors.lastname: Saito
authors.forename: Takashi
authors.initials: T
authors.lastname: Ishida
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Munakata
mesh_terms: D000368:Aged; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D015270:Mycobacterium avium-intracellulare Infection / Q000000981:diagnostic imaging*; D049268:Positron-Emission Tomography; D003074:Solitary Pulmonary Nodule / Q000000981:diagnostic imaging*
chemical_list: D019788:Fluorodeoxyglucose F18