Mediastinoscopy with special reference to the diagnosis of sarcoid.
D001706:Biopsy; D001999:Bronchoscopy; D004724:Endoscopy; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis* / Q000473:pathology; D008482:Mediastinum; D012507:Sarcoidosis / Q000175:diagnosis* / Q000473:pathology