Tracheobronchial amyloidosis--bronchoscopic diagnosis and therapy of an uncommon disease: a case report.

We report on a 65-year-old female who complained of recurrent bronchopulmonary infections since 1999. She suffered from permanent cough and progressive dyspnea. The diagnosis of amyloidosis was made by bronchoscopic tissue biopsies, during which severe bleeding occurred. Argon-plasma-laser treatment stopped the bleeding and resulted in a successful recanalization of the left main bronchus. The patient noticed a decrease in dyspnea shortly after the intervention. Further diagnostic procedures did not show any signs of systemic or malignant disease. This led us to the diagnosis of a rare form of isolated tracheobronchial amyloidosis.