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