A 64-year-old man presented with gradual onset of confusion, ataxia and 25-pound weight loss over 3 months. MRI of the brain revealed two enhancing cerebellar lesions suspicious for metastases. Positron emission tomography-CT showed enhancement of cervical and axillary lymph nodes. Left axillary lymph node biopsy showed no evidence of malignancy but instead showed fungal organisms morphologically consistent with Histoplasma spp. Disseminated histoplasmosis with central nervous system involvement was suspected. Further history revealed that the patient had been having subjective fever for the past several months. He has had mild pancytopenia for about 2 years, which had not been further evaluated. Additionally, he had an oesophagogastroduodenoscopy 3 months prior to admission, which had shown granulomatous gastritis. Subsequently, the diagnosis of disseminated histoplasmosis was confirmed by serological testing and bone marrow biopsy. The patient was started on liposomal amphotericin B. Unfortunately, the patient had a catastrophic stroke and was transitioned to comfort care measures.
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