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Ecchordosis Physaliphora
C. Douglas Phillips, MD, FACR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Abbreviations

              • Ecchordosis physaliphora (EP)
            • Definitions

              • Benign, cystic mass arising from dorsal clivus, considered to be persistent notochordal remnant

            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. Kogue R et al: Evaluation of intradural ecchordosis physaliphora with three-dimensional fluid-attenuated inversion recovery. J Comput Assist Tomogr. 44(5):699-703, 2020
                                        2. Lin E et al: Prognostic implications of gadolinium enhancement of skull base chordomas. AJNR Am J Neuroradiol. 39(8):1509-14, 2018
                                        3. 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
                                        4. 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
                                        5. Alkan O et al: A case of ecchordosis physaliphora presenting with an intratumoral hemorrhage. Turk Neurosurg. 19(3):293-6, 2009
                                        6. Bhat DI et al: Intradural clival chordoma: a rare pathological entity. J Neurooncol. 96(2):287-90, 2009
                                        7. Ciarpaglini R et al: Intradural clival chordoma and ecchordosis physaliphora: a challenging differential diagnosis: case report. Neurosurgery. 64(2):E387-8; discussion E388, 2009
                                        8. Alli A et al: Cerebrospinal fluid rhinorrhea secondary to ecchordosis physaliphora. Skull Base. 18(6):395-9, 2008
                                        9. Srinivasan A et al: Case 133: ecchordosis physaliphora. Radiology. 247(2):585-8, 2008
                                        10. 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
                                        11. Mehnert F et al: Retroclival ecchordosis physaliphora: MR imaging and review of the literature. AJNR Am J Neuroradiol. 25(10):1851-5, 2004
                                        12. Toda H et al: Neuroradiological characteristics of ecchordosis physaliphora. Case report and review of the literature. J Neurosurg. 89(5):830-4, 1998
                                        13. 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

                                                  TERMINOLOGY

                                                  • Abbreviations

                                                    • Ecchordosis physaliphora (EP)
                                                  • Definitions

                                                    • Benign, cystic mass arising from dorsal clivus, considered to be persistent notochordal remnant

                                                  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. Kogue R et al: Evaluation of intradural ecchordosis physaliphora with three-dimensional fluid-attenuated inversion recovery. J Comput Assist Tomogr. 44(5):699-703, 2020
                                                                              2. Lin E et al: Prognostic implications of gadolinium enhancement of skull base chordomas. AJNR Am J Neuroradiol. 39(8):1509-14, 2018
                                                                              3. 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
                                                                              4. 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
                                                                              5. Alkan O et al: A case of ecchordosis physaliphora presenting with an intratumoral hemorrhage. Turk Neurosurg. 19(3):293-6, 2009
                                                                              6. Bhat DI et al: Intradural clival chordoma: a rare pathological entity. J Neurooncol. 96(2):287-90, 2009
                                                                              7. Ciarpaglini R et al: Intradural clival chordoma and ecchordosis physaliphora: a challenging differential diagnosis: case report. Neurosurgery. 64(2):E387-8; discussion E388, 2009
                                                                              8. Alli A et al: Cerebrospinal fluid rhinorrhea secondary to ecchordosis physaliphora. Skull Base. 18(6):395-9, 2008
                                                                              9. Srinivasan A et al: Case 133: ecchordosis physaliphora. Radiology. 247(2):585-8, 2008
                                                                              10. 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
                                                                              11. Mehnert F et al: Retroclival ecchordosis physaliphora: MR imaging and review of the literature. AJNR Am J Neuroradiol. 25(10):1851-5, 2004
                                                                              12. Toda H et al: Neuroradiological characteristics of ecchordosis physaliphora. Case report and review of the literature. J Neurosurg. 89(5):830-4, 1998
                                                                              13. Watanabe A et al: Magnetic resonance imaging of ecchordosis physaliphora--case report. Neurol Med Chir (Tokyo). 34(7):448-50, 1994