Infections represent a serious and frequent complication in neuro-oncology patients. Decreased immune defences, along with poor nutritional status are the main predisposition factors. The combined therapeutic strategies of chemotherapy and radiotherapy may favour bone marrow depression and further increase the risk of developing opportunistic infections in brain tumour patients. The spectrum of infections in neuro-oncology patients is large and includes opportunistic infections by bacteria, viruses, fungi and parasites. Importantly, a high index of suspicion for opportunistic infections in general should be maintained, especially in glioma patients receiving dose-dense schedules of temozolomide. After neurosurgical procedures, infections most commonly present as meningitis, subdural empyema, or cerebral abscess. Infections represent a frequent and possibly serious complication in general immunocompromised oncology population. It should be underlined that infections are not limited to immunocompromised patients, being also present at the early disease stages, especially due to therapeutic strategies (chemo and radiotherapy, surgical procedures). Therefore this issue deserves more attention in neuroncology setting.
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