Spinal Cord Ischemia due to Vertebral Artery Dissection

We reviewed clinical and neuroradiological findings in 37 consecutive patients with cervical cord infarction due to vertebral artery dissection diagnosed at our institution from 1996 to 2004. Four patients had clinical and neuroradiological findings consistent with spinal cord ischemia. Three patients had “pencil-like” infarction at C3-C5 level; one patient had an infarction of the anterior horns of the spinal grey matter at C3-C4 level. Symptoms were crural sensory deficit with mild tetraparesis and proximal strength deficit of the arms, respectively. Spinal cord infarction complicated vertebral artery dissection in about 10% of patients of our series. Infarctions involved the most central regions of the spinal cord, with relative sparing of the peripheral white matter tracts. Clinical and MRI pictures were almost typical, and consistent with a hemodynamic mechanism for the lesions. Vertebral artery dissection must be considered in the differential diagnosis in patients with cervical cord infarction.