Neuroparacoccidiomicosis Simulating Posterior Fossa Tumor

Paracoccidioidomycosis (PCM) is a systemic granulomatous disease caused by a fungus known as Paracoccidioides brasiliensis. Central nervous system (CNS) is affected in 12% of the cases, but posterior fossa involvement is rarer. We report a case of a patient who presented an expansive lesion at the posterior fossa causing a right hemispheric cerebellar syndrome. After lesion excision and analysis, the diagnosis of Neuroparacoccidiomicosis was confirmed. Our case highlights this rare presentation of this pathology and its capacity to simulate neoplastic lesions.