Long-term outcomes of seizures and epilepsy in patients with untreated cerebral cavernous malformations

This prospective, population-based cohort study focuses on the long-term outcomes of seizures and epilepsy in patients with untreated cerebral cavernous malformations (CCMs). The research tracked 300 patients in Scotland for a median of 15 years to assess the risk of developing seizures and experiencing seizure recurrence without surgical intervention for the CCMs. Key findings include that the risk of a first-ever epileptic seizure from a CCM is low, but the risk of seizure recurrence after a first unprovoked seizure is notably high (80% within 10 years), which justifies the diagnosis of CCM-related epilepsy (CRE). Furthermore, the study found that antiseizure medicine (ASM) significantly reduced the risk of recurrence, and most patients with CRE achieved 2-year and 5-year seizure freedom primarily through medical management. The authors conclude that these long-term data are crucial for informing patients, guiding clinical practice, and highlighting the continued need for randomized controlled trials to compare surgical versus medical management for CRE.