Radiological evolution of peri-odontoid pannus in a patient with Chiari I malformation: a case-based review

Academic Article


  • © 2017, Springer-Verlag Berlin Heidelberg. Introduction: The Chiari I malformation (CIM) is commonly encountered by neurosurgeons and can have different etiologies and clinical presentations. Case report: We report a CIM patient who presented with symptoms of ventral brain stem compression and was found to have a large peri-odontoid pannus. Posterior fossa decompression was performed with a planned second-stage odontoidectomy. However, at the 6-month follow-up, postoperative images demonstrated a mostly resolved pannus and improvement of the brain stem compression symptoms, and the patient progressed uneventfully without the need for odontoidectomy. Conclusions: This case illustrates the resolution of a significant and symptomatic peri-odontoid pannus in a patient with CIM without craniocervical fusion or odontoidectomy. Such a case indicates that not all peri-odontoid pannus formations in CIM patients are due to hypermobility at the craniocervical junction.
  • Authors

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    Digital Object Identifier (doi)

    Author List

  • Sanders FH; Wang JMH; Oskouian RJ; Tubbs RS; Oakes WJ
  • Start Page

  • 1415
  • End Page

  • 1417
  • Volume

  • 33
  • Issue

  • 8