title: Reversed halo sign on thin-section CT in a patient with non-specific interstitial pneumonia.
abstract: We present a case of non-specific interstitial pneumonia (NSIP) with reversed halo sign on thin-section CT. A 52-year-old female presented with a cough and New York Heart Association (NYHA) class 2 dyspnoea of 4 months duration. A chest radiograph showed poorly defined, patchy ground-glass opacities in both lungs. Thin-section CT demonstrated the reversed halo sign, which is a central ground-glass opacity surrounded by crescent or ring-shaped areas of consolidation in multifocal areas. Multifocal patchy ground-glass opacity and consolidation and enlarged paratracheal, hilar and subcarinal lymph nodes were also shown. Video-assisted thoracic surgical (VATS) lung biopsy was performed, and histopathology revealed cellular NSIP.
authors.affiliation: Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 97 Guro-dong, Guro-ku, 152-703, Seoul, Korea.
authors.forename: S H
authors.initials: SH
authors.lastname: Hong
authors.forename: E-Y
authors.initials: EY
authors.lastname: Kang
authors.forename: B K
authors.initials: BK
authors.lastname: Shin
authors.forename: J J
authors.initials: JJ
authors.lastname: Shim
mesh_terms: D003371:Cough / Q000000981:diagnostic imaging*; D004417:Dyspnea / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D017563:Lung Diseases, Interstitial / Q000000981:diagnostic imaging*; D008875:Middle Aged; D014057:Tomography, X-Ray Computed / Q000379:methods*