Large coalescent parenchymal nodules in pulmonary sarcoidosis: "Sarcoid galaxy" sign

Masashi Nakatsu, Hiroto Hatabu, Kenji Morikawa, Hidemasa Uematsu, Yoshiharu Ohno, Koichi Nishimura, Sonoko Nagai, Takateru Izumi, Junji Konishi, Harumi Itoh

Research output: Contribution to journalArticlepeer-review

135 Citations (Scopus)


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." CONCLUSION. 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.

Original languageEnglish
Pages (from-to)1389-1393
Number of pages5
JournalAmerican Journal of Roentgenology
Issue number6
Publication statusPublished - 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging


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