Late-onset Streptococcus pneumoniae brain abscess following cystoperitoneal shunt placement for an arachnoid cyst: illustrative case

Clinicians should be aware of the potential for late-onset brain abscesses associated with CSF shunts, even several years after placement. This case highlights the importance of careful consideration regarding the necessity of shunt placement in asymptomatic patients with arachnoid cysts and the need for vigilant monitoring for rare infectious complications. https://thejns.org/doi/10.3171/CASE25547.