Neonatal posterior fossa haemorrhage: a difficult ultrasound diagnosis

Four newborn neonates with a history of birth trauma and significant neurological signs were examined with both ultrasound and computed tomography (CT) performed within hours of each other. Ultrasound was inadequate in initial assessment, as it missed or underestimated posterior fossa haemorrhage, particularly where this was extraparenchymal or vermian. CT is the examination of choice in these patients.