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Ecchordosis Physaliphora
Miral D. Jhaveri, MD, MBA
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            • Diagnostic Checklist

              TERMINOLOGY

              • Abbreviations

                • Ecchordosis physaliphora (EP)
              • Definitions

                • Benign notochordal remnant derived from ectopic nests along craniospinal axis

              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

                                        • Image Interpretation Pearls

                                          Selected References

                                          1. Galloway L et al: Spontaneous cerebrospinal fluid rhinorrhoea with meningitis secondary to ecchordosis physaliphora. Br J Neurosurg. 33(1):99-100, 2019
                                          2. Georgalas C et al: Ecchordosis physaliphora: a cautionary tale. J Laryngol Otol. 1-6, 2019
                                          3. Peris-Celda M et al: Benign notochordal cell tumor of the clivus with chordoma component: report of 2 cases. J Neurosurg. 1-5, 2019
                                          4. Park HH et al: Ecchordosis physaliphora: typical and atypical radiologic features. Neurosurg Rev. 40(1):87-94, 2017
                                          5. Ferguson C et al: A case study of symptomatic retroclival ecchordosis physaliphora: CT and MR imaging. Can J Neurol Sci. 43(1):210-2, 2016
                                          6. Lagman C et al: Proposed diagnostic criteria, classification schema, and review of literature of notochord-derived ecchordosis physaliphora. Cureus. 8(3):e547, 2016
                                          7. Golden LD et al: Benign notochordal lesions of the posterior clivus: retrospective review of prevalence and imaging characteristics. J Neuroimaging. 24(3):245-9, 2014
                                          8. Chihara C et al: Ecchordosis physaliphora and its variants: proposed new classification based on high-resolution fast MR imaging employing steady-state acquisition. Eur Radiol. 23(10):2854-60, 2013
                                          9. Bhat DI et al: Intradural clival chordoma: a rare pathological entity. J Neurooncol. 96(2):287-90, 2010
                                          10. Alkan O et al: A case of ecchordosis physaliphora presenting with an intratumoral hemorrhage. Turk Neurosurg. 19(3):293-6, 2009
                                          11. Ciarpaglini R et al: Intradural clival chordoma and ecchordosis physaliphora: a challenging differential diagnosis: case report. Neurosurgery. 64(2):E387-8; discussion E388, 2009
                                          12. Alli A et al: Cerebrospinal fluid rhinorrhea secondary to ecchordosis physaliphora. Skull Base. 18(6):395-9, 2008
                                          13. Srinivasan A et al: Case 133: ecchordosis physaliphora. Radiology. 247(2):585-8, 2008
                                          14. Roberti F et al: Intradural cranial chordoma: a rare presentation of an uncommon tumor. Surgical experience and review of the literature. J Neurosurg. 106(2):270-4, 2007
                                          15. Mehnert F et al: Retroclival ecchordosis physaliphora: MR imaging and review of the literature. AJNR Am J Neuroradiol. 25(10):1851-5, 2004
                                          16. Toda H et al: Neuroradiological characteristics of ecchordosis physaliphora. Case report and review of the literature. J Neurosurg. 89(5):830-4, 1998
                                          17. Watanabe A et al: Magnetic resonance imaging of ecchordosis physaliphora--case report. Neurol Med Chir (Tokyo). 34(7):448-50, 1994
                                          Related Anatomy
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                                          Related Differential Diagnoses
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                                          References
                                          Tables

                                          Tables

                                          KEY FACTS

                                          • Terminology

                                            • Imaging

                                              • Top Differential Diagnoses

                                                • Pathology

                                                  • Clinical Issues

                                                    • Diagnostic Checklist

                                                      TERMINOLOGY

                                                      • Abbreviations

                                                        • Ecchordosis physaliphora (EP)
                                                      • Definitions

                                                        • Benign notochordal remnant derived from ectopic nests along craniospinal axis

                                                      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

                                                                                • Image Interpretation Pearls

                                                                                  Selected References

                                                                                  1. Galloway L et al: Spontaneous cerebrospinal fluid rhinorrhoea with meningitis secondary to ecchordosis physaliphora. Br J Neurosurg. 33(1):99-100, 2019
                                                                                  2. Georgalas C et al: Ecchordosis physaliphora: a cautionary tale. J Laryngol Otol. 1-6, 2019
                                                                                  3. Peris-Celda M et al: Benign notochordal cell tumor of the clivus with chordoma component: report of 2 cases. J Neurosurg. 1-5, 2019
                                                                                  4. Park HH et al: Ecchordosis physaliphora: typical and atypical radiologic features. Neurosurg Rev. 40(1):87-94, 2017
                                                                                  5. Ferguson C et al: A case study of symptomatic retroclival ecchordosis physaliphora: CT and MR imaging. Can J Neurol Sci. 43(1):210-2, 2016
                                                                                  6. Lagman C et al: Proposed diagnostic criteria, classification schema, and review of literature of notochord-derived ecchordosis physaliphora. Cureus. 8(3):e547, 2016
                                                                                  7. Golden LD et al: Benign notochordal lesions of the posterior clivus: retrospective review of prevalence and imaging characteristics. J Neuroimaging. 24(3):245-9, 2014
                                                                                  8. Chihara C et al: Ecchordosis physaliphora and its variants: proposed new classification based on high-resolution fast MR imaging employing steady-state acquisition. Eur Radiol. 23(10):2854-60, 2013
                                                                                  9. Bhat DI et al: Intradural clival chordoma: a rare pathological entity. J Neurooncol. 96(2):287-90, 2010
                                                                                  10. Alkan O et al: A case of ecchordosis physaliphora presenting with an intratumoral hemorrhage. Turk Neurosurg. 19(3):293-6, 2009
                                                                                  11. Ciarpaglini R et al: Intradural clival chordoma and ecchordosis physaliphora: a challenging differential diagnosis: case report. Neurosurgery. 64(2):E387-8; discussion E388, 2009
                                                                                  12. Alli A et al: Cerebrospinal fluid rhinorrhea secondary to ecchordosis physaliphora. Skull Base. 18(6):395-9, 2008
                                                                                  13. Srinivasan A et al: Case 133: ecchordosis physaliphora. Radiology. 247(2):585-8, 2008
                                                                                  14. Roberti F et al: Intradural cranial chordoma: a rare presentation of an uncommon tumor. Surgical experience and review of the literature. J Neurosurg. 106(2):270-4, 2007
                                                                                  15. Mehnert F et al: Retroclival ecchordosis physaliphora: MR imaging and review of the literature. AJNR Am J Neuroradiol. 25(10):1851-5, 2004
                                                                                  16. Toda H et al: Neuroradiological characteristics of ecchordosis physaliphora. Case report and review of the literature. J Neurosurg. 89(5):830-4, 1998
                                                                                  17. Watanabe A et al: Magnetic resonance imaging of ecchordosis physaliphora--case report. Neurol Med Chir (Tokyo). 34(7):448-50, 1994