Large coalescent parenchymal nodules in pulmonary sarcoidosis: "sarcoid galaxy" sign.

Nakatsu, Masashi; Hatabu, Hiroto; Morikawa, Kenji; Uematsu, Hidemasa; Ohno, Yoshiharu; Nishimura, Koichi; Nagai, Sonoko; Izumi, Takateru et al. · AJR Am J Roentgenol · 2002

case_series · Level IV

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Abstract

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." 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.

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