Brain abscess in childhood--long-term experiences.

A retrospective evaluation was performed on 28 cases of paediatric brain abscess (male: female ratio 2.5:1; mean age 9.4 years; range 2.8-16 years) diagnosed between 1967 and 1987. In 46%, congenital cyanotic heart disease was identified as a predisposing factor, likewise sinusitis, otitis media or mastoiditis in 29% and immunodeficiency in 11%. Pathogenesis remained unclear in 14%. Initial symptoms and signs were predominantly nonspecific; loss of consciousness occurred in 32% of cases, neurological deficit and seizures each in 25%. Since the availability of CT, both diagnostic delay after hospital admission and mortality were substantially reduced: mean delay from 8.4 to 3.0 days, and mortality from 23% to 0%. Seventeen patients (61%) had follow up examinations 9.6 years (mean) after the acute illness (range 1-21 years). Neurological sequelae were diagnosed in 35% of cases, epilepsy in 29%, epileptic potentials during EEG in 12%, and CNS scars in 50%. Psychological testing revealed no statistically significant differences compared to normal populations. CNS scars, and epilepsy and/or epileptic potentials were more common after excision (7 patients) when compared to patients treated by aspiration and/or antibiotics alone (21 patients). It is concluded that excision of brain abscess should be avoided whenever possible. Therapy of choice consists of the administration of adequate antibiotics with or without CT-guided needle aspirations.