NON RARE IN EUROPE: Periventricular leukomalacia

Periventricular leukomalacia (PVL), also known as periventricular white matter injury, is a form of brain injury that primarily affects premature infants. It involves damage and softening (necrosis) of the white matter surrounding the lateral ventricles of the brain. The white matter in this region contains nerve fibers responsible for transmitting signals between the brain and the body, particularly to the lower extremities. PVL occurs most commonly in preterm neonates, particularly those born before 32 weeks of gestation, and is strongly associated with cerebral hypoperfusion and ischemia, often in the context of perinatal complications such as hypotension, sepsis, or respiratory distress. The condition primarily affects the central nervous system. The hallmark clinical consequence of PVL is spastic diplegia, a form of cerebral palsy characterized by stiffness and movement difficulties predominantly in the legs. Depending on the extent and location of white matter damage, affected individuals may also develop intellectual disability, visual impairment (particularly cortical visual impairment), seizures, and other neurodevelopmental delays. The severity of outcomes varies widely, ranging from mild motor difficulties to severe quadriplegia with cognitive impairment. There is currently no cure for periventricular leukomalacia. Treatment is supportive and multidisciplinary, focusing on managing the neurological consequences of the white matter injury. This includes physical therapy, occupational therapy, speech therapy, and management of spasticity through medications (such as baclofen or botulinum toxin injections) or surgical interventions. Early intervention programs are critical to optimizing developmental outcomes. Preventive strategies focus on reducing premature birth, careful neonatal management of blood pressure and oxygenation, and potentially neuroprotective agents such as magnesium sulfate administered to mothers at risk of preterm delivery.

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