ependymoma


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ependymoma

 [ĕ-pen″dĭ-mo´mah]
a tumor composed of differentiated ependymal cells; most are slow growing and benign, but occasionally one is malignant.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

e·pen·dy·mo·ma

(ĕ-pen'di-mō'mă),
A glioma derived from relatively undifferentiated ependymal cells, comprising approximately 1-3% of all intracranial neoplasms; ependymomas occur in all age groups and may originate from the lining of any of the ventricles or, more commonly, from the central canal of the spinal cord; histologically, the neoplastic cells tend to be arranged radially about blood vessels, to which they are attached by means of fibrillary processes.
Farlex Partner Medical Dictionary © Farlex 2012

ependymoma

Ependymal tumor Neurology An indolent ependymal cell–brain tumor, that arises in the walls of the ventricles–lateral, 3rd, 4th and central canal of the spinal cord. See Myxopapillary ependymoma.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

e·pen·dy·mo·ma

(ĕ-pen'di-mō'mă)
A glioma derived from relatively undifferentiated ependymal cells; ependymomas may originate from the lining of any of the ventricles or, more commonly, from the central canal of the spinal cord.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

ependymoma

A tumour of the supporting (glial) tissue of the brain. See also GLIOMA.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

e·pen·dy·mo·ma

(ĕ-pen'di-mō'mă)
Glioma derived from relatively undifferentiated ependymal cells, comprising approximately 1-3% of all intracranial neoplasms; occurs in all age groups and may originate from the lining of any of the ventricles or, more commonly, from the central canal of the spinal cord.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Caption: Figure 5: Ependymoma. Panel a: Squash smears (x 10) revealed tumor with small round monomorphic cells.
Glial fibrillary acidic protein in ependymoma & other brain tumors.
Lilwen has a rare type of brain tumour called ependymoma - a tumour that can start in the brain or spinal cord.
Immunohistochemical analysis of H3K27me3 demonstrates global reduction in group-A childhood posterior fossa ependymoma and is a powerful predictor of outcome.
The 2007 World Health Organization (WHO) classification of primary brain tumors distinguished four types of ependymal tumors based on their histological appearance: subependymoma (WHO grade I), myxopapillary ependymoma (WHO grade I), ependymoma with cellular, papillary and clear cell variants (WHO grade II) and anaplastic ependymoma (WHO grade III) [2].
Ependymomas showed almost same peak of choline as in medulloblastomas of 0.7 in high grade and 0.4 in low grade.
Bodie McNulty, two, was discovered to have a cancerous ependymoma a few days after Christmas in 2016 and had her first of four operations on New Year's Eve.
(9) Individual tumor cells are often round to oval with scant or moderate eosinophillic cytoplasm and pleomorphic nuclei with rhabdoid and epitheloid cells scattered at periphery.9 ESMC expresses neuroendocrine differentiation with strong immunopositivity for vimentin and synaptophysin (7) and weak or focal positivity for EMA and S-100.7 Myxoid matrix with lobulated neoplastic cells is also seen in chordoma, parachordoma, chordoid meningiomas, and myxopapillary ependymoma. However, chordomas stain positive for panCK and EMA and negative for GFAP while parachordomas are positive for EMA, S-100, panCK, and vimentin with abundant type IV collagen.
Tim died Tuesday from recent complications of a brain and spinal cancer called anaplastic ependymoma, which he was diagnosed with at age 4.
The most frequent are Ewing sarcoma, benign osteoblastoma, aneurysmal bone cyst, osteoid osteoma, and primary lymphoma as well as spinal cord tumors such as ependymoma [14].