Pulmonary sarcoidosis mimicking tuberculosis: Importance of the galaxy sign on thoracic computed tomography. / Sarcoidosis pulmonar simulando una tuberculosis: importancia del signo de la galaxia en TC de tórax.

Sarcoidosis and tuberculosis are two common granulomatous conditions that may share clinical and radiological presentations. The galaxy sign (sarcoid galaxy sign) is a characteristic radiological sign of pulmonary sarcoidosis on thoracic computed tomography (CT). We present the case of a patient with sarcoidosis that was initially misdiagnosed as tuberculosis, in whom the galaxy sign on CT was useful as it suggested the correct diagnosis.