Study was conducted on 13 patient who has suffered from persistent hoarseness. 5 was treated by shaving biopsy for many times with histological finding was inflammatory tissue. the examination found a slight dyspnea, while laryngo-tracheo-bronchoscopy showed some soft. polished burgeons scattered in vestibule, hypolalYnx, trachea and bronchea. Biopsy with red Congo has given the evidence of amyloidosis...