Supplementary Material for: Case Report: Internal Cerebral Vein Thrombus Mimicking Thalamic Neoplasm in a Child with Down Syndrome

A two-year-old boy with Trisomy 21 presented with 5 days of altered mentation and fussiness, nausea, vomiting and seizures. CT head demonstrated a right thalamic edematous lesion. MRI showed a lesion with imaging features suggestive of a thalamic neoplasm that was ultimately found to be an infarct secondary to right internal cerebral vein thrombus. The patient was treated with heparin and returned to his clinical baseline.