title: Sarcoidosis presenting as a mediastinal mass in a patient with myasthenia gravis.
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D009157:Myasthenia Gravis / Q000150:complications*; D012507:Sarcoidosis / Q000175:diagnosis*; D013953:Thymus Neoplasms / Q000175:diagnosis*