Chagas disease is a parasitic zoonosis, endemic to Latin America, caused by the protozoan Trypanosoma cruzi. In the human central nervous system, there are two presentations of the disease: meningoencephalitis with trypomastigotes in cephalo raquidean fluid or chagoma, that consists of a nest of amastigotes associated with multifocal necrotizing encephalitis with abscesses. We present the case of a smoker patient and, a user of illicit drugs, who was admitted to the hospital due to convulsive condition, left homonymous hemianopsia, left facial paresis and, left lower body anesthesia. A nuclear magnetic resonance was performed, where space occupant mass was observed in the subcortical right parietal area. Mobile trypomastigots were detected by direct examination of the biopsy and intracellular amastigotes of T. cruzi by Giemsa staining. After the patient’s anamnesis, serological studies and detection of anti-HIV antibodies by Elisa were requested, being positive. Chagas disease is one of the opportunistic pathologies to be considered in the differential diagnoses of occupant lesions of central nervous system space since its rapid diagnosis and timely treatment lead to better patient survival.
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