Basal ganglia stroke due to mild head trauma
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Ischemia of the basal ganglia as an immediate consequence of minor head trauma in children under 18 months of age is a rare eventuality (< 2% of all ischemic stroke in childhood), it is caused by vasospasm of the lenticulostriate arteries, frequent in childhood, which are disrupted by head injury. Generally, it manifests with nausea, vomiting, hemiparesis and drowsiness, a clinical picture known as JHTS syndrome (Juvenile Head Trauma Syndrome). We report the case of a 10 month old child who presented an acute ischemic lesion of the left lenticular nucleus, after a minor head trauma. The ensuing facio-brachio-crural hemiparesis improved over time until complete regression of symptoms 45 days later.

Case description
A 10 month old girl with not clinical history of seizures was brought to our observation following a head injury involving the right temporo-occipital region: trauma had been caused by an accidental fall from a changing table at height of 1 m. She didn't lose consciousness but developed a right hemiparesis after 15 minutes. At neurological examination the GCS score was 14, and the child was isochoric with isocyclic pupils: there was a right facio-brachio-crural hemiparesis with muscle strength of -3/5. A head CT scan, done in emergency, showed a right occipital bone fracture with moderate diastases of the right branch of the lambdoid suture, without any intra or extraaxial blood collections. A brain MRI with Gd-DTPA was performed and documented the presence of a hyperacute ischemic lesion of about 2 cm in diameter, in the left lenticular nucleus extending to the internal capsule.....