Penicilliosis marneffei is an extremely rare fungal infectious disease and is especially rare in people with normal immunity. Penicilliosis marneffei restricted to the lung and involving the formation of a pulmonary tumor is difficult to distinguish from peripheral lung cancer. This kind of case has rarely been reported. We report the case of a 53-year-old man with penicilliosis marneffei misdiagnosed as lung cancer by 18 F-FDG PET/CT.
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