Bacterial brain abscess remain a serious central nervous system infectious disorder despite advances in neurosurgical, neuroimaging, clinical support on intensive care units, microbiological techniques and availability of new antibiotics. The successful treatment of brain abscess usually requires surgery, appropriate antibiotic therapy and eradication of the primary source. Although uncommon, brain abscesses are particularly important in the pediatric population due to its devastating potential to cause severe neurologic deficits, especially in preterm newborns. The purpose of the present report is to describe the case of a Brazilian premature neonate with pyogenic brain abscesses caused by Serratia marcescens and to discuss therapeutic and diagnostic approaches. The early suspicion, proper diagnostic measures and immediate neurosurgical consultation associated with aggressive antibiotic therapy seem to be the essentials steps on the management for those high-risk pediatric patients.