Diagnostic Considerations

With intracranial (posterior fossa) ependymoma, the differential diagnosis includes the following:

With intracranial (supratentorial) ependymoma, the differential diagnosis includes the following:

With spinal (intramedullary) ependymoma, the differential diagnosis includes the following:

Other diagnostic considerations include the following:

Differential Diagnoses

Workup

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Media Gallery

CT scan without contrast. Fourth ventricle ependymoma.
CT scan without contrast. Fourth ventricle ependymoma. Note blood in the fourth ventricle.
CT scan without contrast in the patient with fourth ventricle ependymoma. Blood has refluxed into the third and lateral ventricles.
CT scan without contrast in the patient with fourth ventricle ependymoma. Note blood traversing foramina.
T1-weighted MRI. Rare case of a fourth ventricle ependymoma presenting as an intraventricular bleed.
T1-weighted MRI without contrast demonstrating ependymoma located in the fourth ventricle.
T2-weighted MRI demonstrating ependymoma in the fourth ventricle.
Coronal T1-weighted MRI with contrast demonstrating ependymoma of the fourth ventricle.
Gross surgical specimen of a fourth ventricle ependymoma.
Histologic study of a classic ependymoma. Note the characteristic perivascular pseudorosettes.
Cellular ependymoma. Cells with a high nuclear-cytoplasmic ratio. Few pseudorosettes or paucicellular areas are present.
Myxopapillary ependymoma. Clusters of loosely arranged cuboidal cells separated by pools of mucin.
Clear cell ependymoma. Round cells with cytoplasmic clearing. This may mimic an oligodendroglioma.
MRI images of an ependymoma in the left ventricle. Courtesy of figshare.com [El Majdoub, Faycal; Elawady, Moataz; Blau, Tobias; Bührle, Christian; Hoevels, Mauritius; Runge, Matthias; et al. (2016): Intracranial Ependymoma: Long-Term Results in a Series of 21 Patients Treated with Stereotactic 125Iodine Brachytherapy. PLOS ONE. Dataset. Available at: https://figshare.com/articles/dataset/Intracranial_Ependymoma_Long_Term_Results_in_a_Series_of_21_Patients_Treated_with_Stereotactic_125_Iodine_Brachytherapy__/117659].
MRI image of the sagittal neck with an ependymoma. Modification of a figure from nl-wiki, without author annotations. Courtesy of Wikimedia Commons [Author Lucien Monfils, available at: https://commons.wikimedia.org/wiki/File:Ependymoma.png].

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Author

Jeffrey N Bruce, MD Edgar M Housepian Professor of Neurological Surgery Research, Vice-Chairman and Professor of Neurological Surgery, Director of Columbia Brain Tumor Center, Director of Bartoli Brain Tumor Laboratory, Department of Neurosurgery, Columbia University Vagelos College of Physicians and Surgeons

Jeffrey N Bruce, MD is a member of the following medical societies: Alpha Omega Alpha, American Association of Neurological Surgeons, American Society of Clinical Oncology, Congress of Neurological Surgeons, New York Academy of Sciences, North American Skull Base Society, Pituitary Society, Society for Neuro-Oncology, Society of Neurological Surgeons

Disclosure: Serve(d) as a director, officer, partner, employee, advisor, consultant or trustee for: Theracle, Inc. <br/>Received grant/research funds from NIH for other.

Coauthor(s)

Adithya Kannan, BS MD Candidate, Columbia University Vagelos College of Physicians and Surgeons

Disclosure: Nothing to disclose.

Nadine M Khoury MD Candidate, Columbia University Vagelos College of Physicians and Surgeons

Disclosure: Nothing to disclose.

Nina Teresa Yoh, MD Resident Physician, Department of Neurological Surgery, Columbia University Irving Medical Center, New York-Presbyterian Hospital

Nina Teresa Yoh, MD is a member of the following medical societies: Alpha Omega Alpha, American Association of Neurological Surgeons, Congress of Neurological Surgeons, Gold Humanism Honor Society, Neurocritical Care Society

Disclosure: Nothing to disclose.

Specialty Editor Board

Francisco Talavera, PharmD, PhD Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Received salary from Medscape for employment. for: Medscape.

Chief Editor

Herbert H Engelhard, III, MD, PhD, FACS, FAANS Affiliated Professor of Bioengineering, University of Illinois at Chicago

Herbert H Engelhard, III, MD, PhD, FACS, FAANS is a member of the following medical societies: American Association for Cancer Research, American Association of Neurological Surgeons, American College of Surgeons, American Medical Association, Congress of Neurological Surgeons, Illinois State Medical Society

Disclosure: Nothing to disclose.

Additional Contributors

Robert C Shepard, MD, FACP Associate Professor of Medicine in Hematology and Oncology at University of North Carolina at Chapel Hill; Vice President of Scientific Affairs, Therapeutic Expertise, Oncology, at PRA International

Robert C Shepard, MD, FACP is a member of the following medical societies: American Association for Cancer Research, American Association for Physician Leadership, European Society for Medical Oncology, Association of Clinical Research Professionals, American Federation for Clinical Research, Eastern Cooperative Oncology Group, Society for Immunotherapy of Cancer, American Medical Informatics Association, American College of Physicians, American Federation for Medical Research, American Medical Association, American Society of Hematology, Massachusetts Medical Society

Disclosure: Nothing to disclose.

Neil A Feldstein, MD Director of Pediatric Neurosurgery, Department of Neurosurgery, Babies and Children's Hospital of New York, Assistant Professor,Departments of Clinical Neurosurgery and Pediatrics, Columbia-Presbyterian Medical Center, Columbia University

Neil A Feldstein, MD is a member of the following medical societies: American Association of Neurological Surgeons, American Cleft Palate-Craniofacial Association, American College of Surgeons, American Medical Association, Medical Society of the State of New York

Disclosure: Nothing to disclose.

David J Fusco, MD Neurosurgeon and Partner, Barrow Brain and Spine; Director of Inpatient Neurosurgical Care, Chandler Regional Medical Center

David J Fusco, MD is a member of the following medical societies: American Association of Neurological Surgeons, American Medical Association, Congress of Neurological Surgeons, North American Spine Society

Disclosure: Nothing to disclose.

Benjamin C Kennedy, MD Assistant Professor of Neurosurgery, Perelman School of Medicine at the University of Pennsylvania; Director of Epilepsy and Functional Neurosurgery, The Children’s Hospital of Philadelphia

Disclosure: Nothing to disclose.

Acknowledgements

We wish to acknowledge previous contributions to this article by Paul C McCormick, MD, and Allen Waziri, MD.

Supratentorial ependymomas	ZFTA (C11orf95): Zinc Finger Translocation Associated gene
Supratentorial ependymomas	YAP1: Yes-Associated Protein 1
Posterior fossa ependymomas	Posterior Fossa Group A molecular profile
Posterior fossa ependymomas	Posterior Fossa Group B molecular profile
Spinal ependymomas	NF2: Neurofibromatosis 2 gene
	MYCN Proto-oncogene
	MYCN Non-amplified
Subependymoma	Supratentorial
	Posterior fossa
	Spinal

Ependymoma Differential Diagnoses

Diagnostic Considerations

Differential Diagnoses

References

Tables

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