A 66-year-old woman who had a history of bullous pemphigoid was admitted to our hospital with abnormal shadows on chest radiography. She was being treated with prednisolone, which suggested that she might be in an immunosuppressed state. The chest radiograph and CT scan disclosed an infiltrative opacity, rapidly progressive cavitation, subsequent mycetoma formation, and a nodular shadow with a clear margin. Histological examination revealed a fungus ball in the cavitary lesion and a small mass of hyphae in necrotic tissue. After transbronchoscopic infusion of fluconazole, the cavitary lesion showed a marked resolution on the chest CT scan, and the infiltrative shadow and the nodule disappeared. It is said that aspergillosis is a spectrum of conditions whose precise manifestation is determined by the state of the lung tissue and by the patient's immune status. We report this rare case of pulmonary aspergillosis presenting various forms of shadow.
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