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1.

Myxopapillary Ependymoma

A slow growing, WHO grade I glioma which generally occurs in young adults. It arises almost exclusively in the conus medullaris, cauda equina, and filum terminale of the spinal cord. It generally has a favorable prognosis and is characterized histologically by tumor cells arranged in a papillary manner around vascularized mucoid stromal cores. (Adapted from WHO). [from NCI]

MedGen UID:
104717
Concept ID:
C0205769
Neoplastic Process
2.

Ependymoma

Ependymomas are rare glial tumors of the brain and spinal cord (Yokota et al., 2003). [from GTR]

MedGen UID:
41825
Concept ID:
C0014474
Neoplastic Process
3.

Ependymoma

The presence of an ependymoma of the central nervous system. [from HPO]

MedGen UID:
505390
Concept ID:
CN002611
Finding
4.

Intracranial Neoplasm

A benign or malignant neoplasm that arises from or metastasizes to structures within the cranium. This includes meningeal and other tumors that occur in the spaces that surround the brain, and neoplasms of the brain. [from NCI]

MedGen UID:
287152
Concept ID:
C1527390
Neoplastic Process
5.

Episodic

Applied to a sign, symptom, or other manifestation that occurs at least twice and potentially multiple times but separated by an interval in whichthe sign, symptom, or manifestation is not present. [from HPO]

MedGen UID:
910017
Concept ID:
CN240220
Organism Attribute
6.

Usually

A response indicating that something happens or happened most of the time. [from NCI]

MedGen UID:
854883
Concept ID:
C3888388
Finding
7.

Staining

MedGen UID:
352872
Concept ID:
C1704680
Finding
8.

Possible

Capable of happening or occurring. [from NCI]

MedGen UID:
137646
Concept ID:
C0332149
Finding
9.

Subependymal glioma

A benign, slow growing neoplasm which is typically attached to a ventricular wall. It is composed of glial tumor cell clusters embedded in an abundant fibrillary matrix with frequent microcystic change. Some lesions have the histological features of both subependymoma and ependymoma. It is often detected incidentally and has a very favorable prognosis. (Adapted from WHO.) [from NCI]

MedGen UID:
64637
Concept ID:
C0206725
Neoplastic Process
10.

Focal

Area of greatest concentration, attention, or activity; a central point or locus, especially of an infection. [from NCI]

MedGen UID:
61391
Concept ID:
C0205234
Spatial Concept
11.

Multifocal

Arising from, pertaining to, or having many locations. [from NCI]

MedGen UID:
59976
Concept ID:
C0205292
Spatial Concept
12.

Tumorigenesis

A pathologic process that involves the transformation of normal cells to a neoplastic state and resulting in polyclonal or monoclonal neoplastic cell proliferation. [from NCI]

MedGen UID:
3302
Concept ID:
C0007621
Neoplastic Process
13.

Epithelial Neoplasm

A benign or malignant neoplasm that arises from and is composed of epithelial cells. This category include adenomas, papillomas, and carcinomas. [from NCI]

MedGen UID:
277963
Concept ID:
C1368683
Neoplastic Process
14.

Cancer, Embryonal

MedGen UID:
199639
Concept ID:
C0751364
Neoplastic Process
15.

Polar Spongioblastoma

A lesion characterized by the presence of neoplastic neuroepithelial cells with palisading nuclei. This lesion implies a morphologic growth pattern and it is not considered a clinicopathological entity. [from NCI]

MedGen UID:
154309
Concept ID:
C0555199
Neoplastic Process
16.

Papillary Ependymoma

A rare variant of ependymoma characterized by well formed papillae. Tumor cell processes abutting capillaries are usually GFAP-positive. Differential diagnoses include choroid plexus papilloma, papillary meningioma and metastatic papillary carcinomas. (Adapted from WHO) [from NCI]

MedGen UID:
90810
Concept ID:
C0334578
Neoplastic Process
17.

Neoplasm of the central nervous system

A benign or malignant, primary or metastatic neoplasm that affects the brain, meninges, or spinal cord. Representative examples of primary neoplasms include astrocytoma, oligodendroglioma, ependymoma, and meningioma. Representative examples of metastatic neoplasms include carcinoma and leukemia. [from NCI]

MedGen UID:
88335
Concept ID:
C0085136
Neoplastic Process
18.

Neuroepithelial neoplasm

A neoplasm composed of neural epithelium, not necessarily a neoplasm located in the neural epithelium or neuroepithelium. [from HPO]

MedGen UID:
60215
Concept ID:
C0206715
Neoplastic Process
19.

Neuroectodermal neoplasm

A neoplasm arising in the neuroectoderm, the portion of the ectoderm of the early embryo that gives rise to the central and peripheral nervous systems, including some glial cells. [from HPO]

MedGen UID:
60072
Concept ID:
C0206093
Neoplastic Process
20.

Neoplasm of the nervous system

A benign or malignant, primary or metastatic neoplasm involving the central or peripheral nervous system. [from NCI]

MedGen UID:
45046
Concept ID:
C0027766
Neoplastic Process
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