How often do seizures in children come from pvl?

Unknown: The actual relationship between periventricular leukomalacia and seizures is unknown. While it is true that acute brain injury may often manifest with seizures, pvl is something we often see long after the seizures themselves have stopped, although both the seizures and the pvl may have the same underlying cause. Once pvl is discovered, the risk of subsequent seizures is about 20%.

PVL: The incidence of seizures in patients with pvl is approximately 20%. It is more difficult to answer the question of taking all patients with seizure and determining how often those patients have pvl.