text_1: I had a 31-year-old woman with a mediastinal mass with dyspnea and dysphagia.  She had a thoracoscopy and biopsy and this showed a noncaseating granuloma.  So now the question was, did she have sarcoid or histoplasmosis?
text_2: What should you do with a noncaseating enlarging mediastinal mass in a 31-year-old woman?