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  • Title: Community-acquired bacterial meningitis in adults with cancer or a history of cancer.
    Author: Costerus JM, Brouwer MC, van der Ende A, van de Beek D.
    Journal: Neurology; 2016 Mar 01; 86(9):860-6. PubMed ID: 26802096.
    Abstract:
    OBJECTIVES: To study the incidence, clinical presentation, causative bacteria, and outcome of community-acquired bacterial meningitis in adults with cancer. METHODS: We evaluated incidence and characteristics of patients with cancer included in a nationwide prospective cohort study of adults with community-acquired meningitis performed in the Netherlands from March 1, 2006, to September 31, 2014. All patients underwent a neurologic examination at hospital discharge, and outcome was graded using the Glasgow Outcome Scale. RESULTS: Active cancer was identified in 68 of 1,351 episodes (5%) and a history of cancer in 87 (6%). The annual incidence of community-acquired bacterial meningitis was 2.71-fold (95% confidence interval [CI] 1.68-4.36, p < 0.001) increased for patients with cancer compared to patients without cancer in 2010, and 3.52-fold (95% CI 2.16-5.73, p < 0.001) in 2013. The clinical presentation of bacterial meningitis in patients with cancer compared to patients without cancer was similar. Patients with active cancer presented with lower leukocyte count in blood (12.1 × 10(9) cells/L vs 17.3 × 10(9) cells/L, p < 0.001) and CSF (670 cells/mm(3) vs 2,567 cells/mm(3), p < 0.001) and were more likely to be infected with Listeria monocytogenes (21% vs 5%, p < 0.001) than patients without cancer. Active cancer was identified as an independent risk factor for unfavorable outcome in bacterial meningitis (odds ratio 1.85, 95% CI 1.09-3.13). CONCLUSIONS: One of 8 patients with community-bacterial meningitis was identified to have a history of cancer and cancer was considered active in half of these patients. Patients with active cancer present with lower CSF leukocyte counts, are more likely to be infected with L monocytogenes, and are at high risk of unfavorable outcome.
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