Abstract
A 71-year-old female was admitted to our hospital on the suspicion of lung cancer. Chest X-ray film showed two small nodules in the right lung. Bronchoscopic examination was performed and an irregularly surfaced lesion with bleeding was found at the orifice of the left lower bronchus. Microscopic findings of transbronchoscopically biopsied specimens from the bronchus showed amyloid deposition in the submucosal space, and biopsied specimens from the right S^6_a and S^5_a showed amyloid deposition in the lung parenchyma. Immunohistological examination by the PAP method revealed that the protein type was AA. This case corresponded to localized primary broncho-pulmonary amyloidosis, and may be the second case reported in Japan.
