Spinal Dumbbell-Shaped Peripheral Primitive Neuroectodermal Tumor in a Child

A 9-year-old boy presented with a 1-month history of progressive bilateral leg weakness. Neurological examination showed paraparesis and decreased deep tendon reflexes of the lower extremities. No skin lesion was noted in the lumbosacral region. For further investigation a spinal MRI was performed which showed a dumbbell-shaped lesion extending from L1 to L3 (fig. 1, 2). The patient was operated on and the lesion was subtotally excised via an...