title: A new instrument for mediastinoscopy.
mesh_terms: D001706:Biopsy; D006801:Humans; D008197:Lymph Node Excision; D008477:Mediastinal Diseases / Q000175:diagnosis*; D008482:Mediastinum / Q000033:anatomy & histology; D020708:Thoracoscopes; D013909:Thorax / Q000033:anatomy & histology