Pulmonary aspergilloma: a potential cause of false positive fluorodeoxyglucose positron emission tomography scan

Pulmonary aspergilloma is a fungus ball developed in a pre-existing lung cavity, generally in the superior lobes. Its size remains stable in most cases and it is usually asymptomatic. Herein, we present a case of a 64-year-old male with pulmonary aspergilloma, which was developed in an emphysematous cyst of the right inferior lobe, increased in size, and fluorodeoxyglucose positron emission tomography scan was positive. There are only a few reported cases of pulmonary aspergilloma with a false positive fluorodeoxyglucose positron emission tomography scan.