[Dural Arteriovenous Fistulae in the Tentorium Manifesting as Dementia].

Background: Tentorial dural arteriovenous fistula(dAVF)is a relatively rare disease which accounts for about 4.8% of all types of dAVF reported in Japan. Approximately 12.

Delayed diagnosis of shunt overdrainage following functional hemispherotomy and ventriculoperitoneal shunt placement in a hemimegalencephaly patient.

Shunt overdrainage represents a nebulous condition of variable clinical and imaging presentations, where the diagnosis is primarily clinical. The condition presents a diagnostic challenge particularly in patients with cognitive impairment and developmental delays. Here we present a 3-year-old boy with drug-resistant focal onset seizures due to hemimegalencephaly who previously underwent functional hemispherotomy followed by ventriculoperitoneal shunt placement for postoperative hydrocephalus.