[Carotid dissection with cerebri media thrombosis due to a tonsillar lesion].

A 7-year-old boy suffered a tonsillar lesion due to trauma and presented to hospital with a GCS of 15. Some hours later he developed hemiparesis with loss of consciousness. Angiography displayed a left-sided carotid dissection associated with thrombosis of the arteria cerebri media. After initial treatment by heparinization, the increase of intracranial pressure was treated by craniectomy. The neurological deficits diminished partially after days and reimplantation of the skull cap was possible. The initial hemiparesis decreased slightly during rehabilitation after 5 weeks.