Granulomatous amebic encephalitis in a patient treated with chemotherapy: a case report and literature review

Background: Granulomatous amebic encephalitis (GAE) is caused by Acanthamoeba species or Balamuthia mandrillaris, which are microscopic, free-living amoebas found worldwide. People with compromised immune systems are at an increased risk of fatal cerebral infection caused by Acanthamoeba species, whereas B. mandrillaris can affect both immunocompromised and immunocompetent patients. Infections can involve the central nervous system causing GAE.Case Report: A 71-year-old Caucasian woman, previously diagnosed with chronic lymphocytic leukemia and undergoing chemotherapy, arrived at the emergency department exhibiting seizure-like symptoms. Brain imaging revealed bilateral cerebral masses with central necrosis and hemorrhage, among other findings. The patient underwent a biopsy and was diagnosed with GAE. Conclusion: Unfortunately, even with the correct diagnosis, GAE leads to rapid deterioration and a higher risk of mortality. This case demonstrates the rapid and severe nature of GAE and emphasizes the need for ongoing studies and better treatment options to improve GAE outcomes.