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Divisione di Neuropsichiatria Infantile, Fondazione C. Mondino, IRCCS, Università di Pavia.
Cystic periventricular Leukomalacia (CPVL), a hypoxic-ischemic lesion of the neonatal brain, which can now be diagnosed in life thanks to ultrasound brain scanning, is considered to be one of the main causes of cerebral palsy (CP), especially in preterm infants. The purpose of our study was to verify this assumption in a population of 337 of gestational age greater than or equal to 32 weeks. The frequency of CPVL proved to be 5.4% for lesions with a diameter of greater than or equal to 3 mm or 9.3% including those of smaller diameter. The development of CPVL infants was favorable in 29% and adverse in 71% of cases. In the latter cases neuromotor sequelae (CP in 62.5% and motor retardation in 8.5%) were accompanied by various other neuropsychic deficits. Prognosis depends on the site and size of the cysts, being harsher for posterior lesions and those exceeding 1 cm in diameter.
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