Chagas disease is a lifelong, systemic, parasitic infection caused by the protozoan Trypanosoma cruzi. The main form of disease transmission is vector borne, but vertical transmission, such as by organ transplantation from a chronically infected donor, is also possible. The brain tumor-like form can occur years after infection and has been described in patients with acquired immunodeficiency syndrome, and in a very few cases in transplant recipients. We describe the case of a kidney transplant patient who was human immunodeficiency virus negative and infected with T. cruzi, and developed cerebral trypanosomiasis that was successfully treated with benznidazole at 7 mg/kg/day for 60 days. The risk of Chagas disease transmission should not be underestimated in renal transplant patients, even in non-endemic areas. Chagas disease can present as a tumor-like brain lesion, very difficult to differentiate from other opportunistic infectious or neoplastic processes. Frequent monitoring for T. cruzi infection is essential to promptly implement treatment, which, in our patient, proved to be effective and safe.

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