title: [A case of organizing pneumonia with a reversed halo sign following postoperative irradiation for breast cancer].
abstract: A 69-year-old woman received radiation therapy of 50 Gy following surgery for left breast cancer. Eleven months later, chest computed tomography revealed infiltrative shadows with air bronchograms in both lower lung fields and a reversed halo sign in the right lower lobe. Transbronchial lung biopsy revealed polypoid granulation tissue in the terminal air spaces, which was consistent with organizing pneumonia (OP). Prednisolone therapy resolved the radiographic abnormalities. The reversed halo sign was believed to be specific to cryptogenic organizing pneumonia. We reported a case of OP with a reversed halo sign following postoperative irradiation for breast cancer.
authors.affiliation: Division of Respiratory Medicine, Matsue Red Cross Hospital.
authors.forename: Natsuko
authors.initials: N
authors.lastname: Mukai
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Tokuyasu
authors.forename: Hiroki
authors.initials: H
authors.lastname: Izumi
authors.forename: Kenichi
authors.initials: K
authors.lastname: Takeda
authors.forename: Hajime
authors.initials: H
authors.lastname: Hikino
authors.forename: Eiji
authors.initials: E
authors.lastname: Shimizu
mesh_terms: D000368:Aged; D001943:Breast Neoplasms / Q000532:radiotherapy* / Q000601:surgery; D018549:Cryptogenic Organizing Pneumonia / Q000000981:diagnostic imaging* / Q000209:etiology; D005260:Female; D006801:Humans; D014057:Tomography, X-Ray Computed