[Diffuse lung involvement in primary amyloidosis as an infrequent cause of interstitial lung disease. Clinical case].

We report a 50 years old female, admitted to the hospital due to malaise lasting 7 months, with diffuse bilateral lung infiltrates and a progressive respiratory insufficiency, dying one month after admission. A transbronchial biopsy disclosed an extensive amyloid infiltration. The necropsy confirmed this finding and showed a systemic primary amyloidosis associated to a multiple myeloma.