Abstract
A 67-year-old man was admitted to our hospital complaining of cough and bloody sputum. The chest radiograph and CT scan disclosed a nodular shadow with a clear margin in the right S^6. The patient was given a diagnosis of pulmonary aspergillosis, because Y-shaped hyphae were detected in the transbronchial lavage fluid and the anti-aspergillus precipitating antibody in serum was positive. Since the nodular shadow was localized in the right S^6, it was resected. The resected lung contained an encapsulated mass consisting of necrotizing brownish tissue. Histological examination revealed a fungus ball in the ectatic bronchus surrounded by inflammatory cell infiltration. This is a rare case of primary pulmonary aspergilloma developing in am otherwise healthy person.
