LOCALIZED OSTEOPLASTIC BRONCHOPATHY WITH A TUMORAL EXPRESSION, INCLUDING AL-AMYLOIDOSIS

We report a case concerning a 65 year old man who suffered from a drug resistant asthma and radiographically visible mass in the right lower lobe of the lung. Pathological studies demonstrated it to be <<Bronch opathia Osteoplastica>>, involving segmentar bronchi, with completed h ematopoietic metaplasia. This rare dystrophic lesion was associated wi th localized lambda light chain amyloidosis as was proved by the immur ohistochemistry. This association suggests a possible relation between amyloidosis and abnormal osteogenesis.