Background: The diagnoses initially considered in cases with either a single or multiple mass in the hilus could be bronchial cancer, hamartoma or a metastatic tumor. Unilateral, single or nodularshaped hilar amyloidosis is seldom observed.
Case Report: In a patient in whom amyloidosis cannot be detected by bronchoscopic examination, the diagnosis is achieved by anterior mediastinoscopy. Bronchial submucosa is greatly expanded by an amorphous pale eosinophilic material in the histopathological examination.
Conclusions: Therefore, amyloidosis might be considered in the differential diagnosis in patients having calcified hilar mass radiologically. We report the fi ndings on CT and MRI of pulmonary amyloidoma may be useful in the differantion from bronchogenic carcinomas and other tumors.

Keywords: Amyloidosis