Bronchopulmonary amyloidosis--multiple tissue involvement and long follow-up.

A 59-year-old man developed a large asymptomatic left hilar mass due to amyloidosis of bronchial lymph nodes. Nodular involvement of the left lung and infiltration of the mucosa of the left lower lobe bronchus followed very gradually and a monoclonal gammopathy (IgA--Type Kappa) was demonstrated. Despite slowly progressive radiologic changes, the disease has had no effect on his health during a 20-year period of observation.