CT brain scan in pneumococcal meningoencephalitis, showing focal infarction in the right frontal lobe and the left frontal and parietal lobes. CT brain scan in pneumococcal meningoencephalitis, showing focal infarction in the right frontal lobe and the left frontal and parietal lobes. This pattern of infarction is due to focal vascular occlusion rather than generalised swelling. Elise Randle et al. Arch Dis Child Educ Pract Ed 2011;96:183-190 Copyright © BMJ Publishing Group Ltd & Royal College of Paediatrics and Child Health. All rights reserved.