Gynaecology & Obstetrics General 45b46e93 All are true regarding periventricular leukomalacia except A Appear as echolucent areas (cysts) on neuroimaging in preterm neonate. B Require atleast 2 weeks to form. C Presence at birth helps to determine timing of hemorrhagic event. D Cystic areas in grey matter of brain that develop after ischemic infarction. High-Yield Explanation Periventricular leukomalacia - refers to cystic areas deep in white matter of brain that develop after hemorrhagic or ischemic infarction.