(PVL) softening of white matter around the ventricles of the brain in preterm infants due to a decreased blood supply to the brain, usually associated with *hypoxic-ischaemic encephalopathy. Diagnosis is by ultrasound, which shows increased density and, later, cysts in the periventricular area. The brain damage can cause visual impairment and cerebral palsy.
(PVH) a significant cause of morbidity and mortality in infants who are born prematurely in which bleeding occurs from fragile blood vessels around the *ventricles in the brain. Bleeding extending into the lateral ventricles is termed intraventricular haemorrhage (IVH) and in severe cases can extend into the brain tissue (cerebral parenchyma). Surviving infants may have long-term neurological deficits, such as cerebral palsy, developmental delay, or seizures.... periventricular haemorrhage
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