title: "Reversed halo sign" of high-resolution computed tomography in pulmonary sarcoidosis.
abstract: We present a case of pulmonary sarcoidosis showing the "reversed halo sign" on high-resolution computed tomography (HRCT). A 27-year-old man presented with nonproductive cough and high fever lasting for 3 weeks. A chest radiograph showed multiple areas of consolidation and cavitary shadows in the lungs. The HRCT showed the reversed halo sign, a central ground-glass opacity surrounded by crescent or ring-shaped areas of consolidation. Moreover, miliary nodules were observed in the central ground-glass opacity areas and around the outer areas of consolidation. The HRCT also showed a large nodule, subpleural nodules bordering the costal pleural surfaces, and interlobular fissure. Transbronchial biopsy was performed, and the histopathologic features were those of sarcoidosis and without cryptogenic organizing pneumonia.
authors.affiliation: Department of Radiology, National Hospital Organization, Omuta Hospital, Omuta City, Fukuoka, Japan. kumazoehi@yahoo.co.jp
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kumazoe
authors.forename: Kazuko
authors.initials: K
authors.lastname: Matsunaga
authors.forename: Nobuhiko
authors.initials: N
authors.lastname: Nagata
authors.forename: Masashi
authors.initials: M
authors.lastname: Komori
authors.forename: Kentarou
authors.initials: K
authors.lastname: Wakamatsu
authors.forename: Akira
authors.initials: A
authors.lastname: Kajiki
authors.forename: Takahiko
authors.initials: T
authors.lastname: Nakazono
authors.forename: Sho
authors.initials: S
authors.lastname: Kudo
mesh_terms: D000328:Adult; D001706:Biopsy; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D017565:Sarcoidosis, Pulmonary / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods*