title: Large coalescent parenchymal nodules in pulmonary sarcoidosis: "sarcoid galaxy" sign.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the large parenchymal nodules in pulmonary sarcoidosis and to describe a new CT sign termed the "sarcoid galaxy."
  
  
  CONCLUSIONS
  The CT appearance of pulmonary sarcoidosis suggests that the large nodules arise from a coalescence of small nodules. The large nodules are surrounded by many tiny satellite nodules. These findings were considered to simulate the appearance of a galaxy. This observation was supported by radiologic-pathologic correlation. The sarcoid galaxy sign may be a useful adjunct in the diagnosis of pulmonary sarcoidosis.
authors.affiliation: Department of Radiology and Nuclear Medicine, Kyoto University Hospital, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Nakatsu
authors.forename: Hiroto
authors.initials: H
authors.lastname: Hatabu
authors.forename: Kenji
authors.initials: K
authors.lastname: Morikawa
authors.forename: Hidemasa
authors.initials: H
authors.lastname: Uematsu
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Ohno
authors.forename: Koichi
authors.initials: K
authors.lastname: Nishimura
authors.forename: Sonoko
authors.initials: S
authors.lastname: Nagai
authors.forename: Takateru
authors.initials: T
authors.lastname: Izumi
authors.forename: Junji
authors.initials: J
authors.lastname: Konishi
authors.forename: Harumi
authors.initials: H
authors.lastname: Itoh
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017565:Sarcoidosis, Pulmonary / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed