[Sonographic follow-up of pronounced brain concussion in a 3-week-old infant following trauma caused by shaking].

Cerebral sonography was performed in a 3 week old whiplash shaken baby who had no external marks of injury and no skull fracture. On the day of admission, increased echogenicity in the white matter could be correlated with hypodense contusional lesions in the cranial computerized tomography. Sonographic follow-up showed multiple cystic defects in the white matter and later on marked dilatation of the adjacent lateral ventricle. In all infants with open anterior fontanel presenting with unexplained clouding of consciousness and/or external marks of child abuse, cerebral sonography should be a basic diagnostic method.