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Extraosseous Chordoma
Patricia A. Hudgins, MD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Diagnostic Checklist

          TERMINOLOGY

          • Abbreviations

            • Extraosseous chordoma
          • Synonyms

            • Nasopharyngeal chordoma
          • Definitions

            • Rare extraosseous locally aggressive tumor of notochordal origin
              • Location & presenting signs differ from classic clival chordoma

          IMAGING

          • General Features

            • Imaging Recommendations

              • CT Findings

                • MR Findings

                  DIFFERENTIAL DIAGNOSIS

                    PATHOLOGY

                    • General Features

                      • Gross Pathologic & Surgical Features

                        • Microscopic Features

                          CLINICAL ISSUES

                          • Presentation

                            • Demographics

                              • Natural History & Prognosis

                                • Treatment

                                  DIAGNOSTIC CHECKLIST

                                  • Consider

                                    • Reporting Tips

                                      Selected References

                                      1. Sajisevi M et al: Nasopharyngeal masses arising from embryologic remnants of the clivus: a case series. J Neurol Surg Rep. 76(2):e253-e257, 2015
                                      2. Vasudevan V et al: Chordoma arising from cranial base extending to oropharynx: an unusual presentation. J Maxillofac Oral Surg. 14(Suppl 1):103-7, 2015
                                      3. Yan ZY et al: Primary chordoma in the nasal cavity and nasopharynx: CT and MR imaging findings. AJNR Am J Neuroradiol. 31(2):246-50, 2010
                                      4. Nguyen RP et al: Extraosseous chordoma of the nasopharynx. AJNR Am J Neuroradiol. 30(4):803-7, 2009
                                      5. DiFrancesco LM et al: Extra-axial chordoma. Arch Pathol Lab Med. 130(12):1871-4, 2006
                                      6. Yamaguchi T et al: Incipient chordoma: a report of two cases of early-stage chordoma arising from benign notochordal cell tumors. Mod Pathol. 18(7):1005-10, 2005
                                      7. Wang YP et al: Extraosseous chordoma of the retropharyngeal space. Otolaryngol Head Neck Surg. 130(3):383-5, 2004
                                      8. Nishigaya K et al: Intradural retroclival chordoma without bone involvement: no tumor regrowth 5 years after operation. Case report. J Neurosurg. 88(4):764-8, 1998
                                      Related Anatomy
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                                      Related Differential Diagnoses
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                                      References
                                      Tables

                                      Tables

                                      KEY FACTS

                                      • Terminology

                                        • Imaging

                                          • Top Differential Diagnoses

                                            • Diagnostic Checklist

                                              TERMINOLOGY

                                              • Abbreviations

                                                • Extraosseous chordoma
                                              • Synonyms

                                                • Nasopharyngeal chordoma
                                              • Definitions

                                                • Rare extraosseous locally aggressive tumor of notochordal origin
                                                  • Location & presenting signs differ from classic clival chordoma

                                              IMAGING

                                              • General Features

                                                • Imaging Recommendations

                                                  • CT Findings

                                                    • MR Findings

                                                      DIFFERENTIAL DIAGNOSIS

                                                        PATHOLOGY

                                                        • General Features

                                                          • Gross Pathologic & Surgical Features

                                                            • Microscopic Features

                                                              CLINICAL ISSUES

                                                              • Presentation

                                                                • Demographics

                                                                  • Natural History & Prognosis

                                                                    • Treatment

                                                                      DIAGNOSTIC CHECKLIST

                                                                      • Consider

                                                                        • Reporting Tips

                                                                          Selected References

                                                                          1. Sajisevi M et al: Nasopharyngeal masses arising from embryologic remnants of the clivus: a case series. J Neurol Surg Rep. 76(2):e253-e257, 2015
                                                                          2. Vasudevan V et al: Chordoma arising from cranial base extending to oropharynx: an unusual presentation. J Maxillofac Oral Surg. 14(Suppl 1):103-7, 2015
                                                                          3. Yan ZY et al: Primary chordoma in the nasal cavity and nasopharynx: CT and MR imaging findings. AJNR Am J Neuroradiol. 31(2):246-50, 2010
                                                                          4. Nguyen RP et al: Extraosseous chordoma of the nasopharynx. AJNR Am J Neuroradiol. 30(4):803-7, 2009
                                                                          5. DiFrancesco LM et al: Extra-axial chordoma. Arch Pathol Lab Med. 130(12):1871-4, 2006
                                                                          6. Yamaguchi T et al: Incipient chordoma: a report of two cases of early-stage chordoma arising from benign notochordal cell tumors. Mod Pathol. 18(7):1005-10, 2005
                                                                          7. Wang YP et al: Extraosseous chordoma of the retropharyngeal space. Otolaryngol Head Neck Surg. 130(3):383-5, 2004
                                                                          8. Nishigaya K et al: Intradural retroclival chordoma without bone involvement: no tumor regrowth 5 years after operation. Case report. J Neurosurg. 88(4):764-8, 1998