[Primary amyloid tumor of the lung]

Primary idiopathic amyloidosis may be a diagnostic problem because of its low incidence and its variable manifestations. The clinical and radiographic findings in a patient with accidentally discovered primary amyloidosis of the lung are presented. The extensive mediastinal and hilar lymph-node enlargement was striking. Peripheral bronchial carcinoma was initially suspected because of the radiographic and CT findings. Various patterns of pulmonary amyloidosis have to be considered in the differential diagnosis of nodules and interstitial changes of the lung.