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Syringobulbia and syringopontia: clinico-imaging dissociation

Sagittal brain MRI scan of a 40-year-old patient with a 10-year history of progressive syringomyelia. Examination: left Horner syndrome; lower motor neuron signs in upper limbs; spastic paraparesis; dissociated sensory loss in upper limbs, trunk, and face, with an onion-bulb distribution. There is a large cyst in the medulla with extension to the pons. (Contributed by Dr. Martín Nogués.)

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Associated Disorders

  • Arnold-Chiari malformation
  • Chiari I malformation
  • Ependymomas
  • Hemangioblastomas
  • Horner syndrome
  • Morvan syndrome