INTRODUCTION: Supratentorial cortical mantle growth after shunt surgery in @entity1 with posthemorrhagic @entity1276 is common. However, cerebellar growth and Chiari are rare. @entity1 DESCRIPTION: We describe a term newborn with an @entity548 and posthemorrhagic @entity1276 who underwent endoscopic third ventriculostomy followed by shunt placement at age 4  months. RESULTS: After shunt placement, her head circumference growth rate rapidly decreased from the ninety-seventh percentile to the third percentile. Six months after a shunt placement, cerebellar disproportional growth was noticed. Five years after surgery, her cerebellar volume had increased by 300% whereas the cerebral hemispheres volume by 150%, and Chiari 1 appeared. She manifested early @entity306 , but, did not develop clinical evidence of @entity428 or @entity854 . CONCLUSION: This term newborn exhibited apparent cerebellar "growth" and posterior fossa crowding after shunt surgery for posthemorrhagic @entity1276 . Our @entity1 's findings may have resulted from shunt-related alterations in pressure dynamics, leading to decreased head growth rate with a relatively smaller posterior fossa, in face of a normal brain growth. The timing of @entity548 at term, beyond the vulnerable period of cerebellar development, may have been a contributing factor to the @entity11578 and posterior fossa crowding cerebellar development may have been relatively spared and was a contributing factor to the @entity11578 and posterior fossa crowding.

"Growing" Cerebellum in an XXXX After Shunt Insertion.

@entity1 :: ('9606', 'Species') :: ['patient', 'infants', 'PATIENT'] @entity11578 :: ('MESH:D020914', 'Disease') :: ['craniocerebellar disproportion'] @entity1276 :: ('MESH:D006849', 'Disease') :: ['hydrocephalus'] @entity428 :: ('MESH:D019586', 'Disease') :: ['increased intracranial pressure'] @entity548 :: ('MESH:D006470', 'Disease') :: ['intraventricular hemorrhage'] @entity854 :: ('MESH:D018376', 'Disease') :: ['brainstem abnormalities'] @entity306 :: ('MESH:D002547', 'Disease') :: ['hemiparetic cerebral palsy']
@entity1 :: (9606,Species) :: ['Infant']
