Glioma classification: Difference between revisions
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* [[Astrocytoma]]s — [[astrocyte]]s | * [[Astrocytoma]]s — [[astrocyte]]s | ||
* [[Oligodendroglioma]]s — [[oligodendrocyte]]s | * [[Oligodendroglioma]]s — [[oligodendrocyte]]s | ||
* Mixed gliomas | * Mixed gliomas ([[oligoastrocytomas]]) — cells from different types of [[glia]] | ||
===2. Based on the grade=== | ===2. Based on the grade=== |
Revision as of 19:29, 23 September 2015
Glioma Microchapters |
Diagnosis |
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Treatment |
Case Studies |
Glioma classification On the Web |
American Roentgen Ray Society Images of Glioma classification |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2], Sujit Routray, M.D. [3]
Overview
Glioma may be classified into several subtypes based on the type of cell, grade, and location.[1]
Classification
Glioma may be classified into several subtypes based on the type of cell, grade, and location.[1]
1. Based on the type of cell
Glioma may be classified according to the type of cell into four subtypes:[1]
- Ependymomas — ependymal cells
- Astrocytomas — astrocytes
- Oligodendrogliomas — oligodendrocytes
- Mixed gliomas (oligoastrocytomas) — cells from different types of glia
2. Based on the grade
Glioma may be classified according to the grade into two subtypes:[1]
- Low-grade gliomas are well-differentiated tumors. These are benign tumors.
- High-grade gliomas are undifferentiated or anaplastic tumors. These are malignant tumors.
WHO grading system for astrocytomas
Grade | Type of tumor |
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WHO grade 1 |
|
WHO grade 2 |
|
WHO grade 3 |
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WHO grade 4 |
3. Based on the location
Glioma may be classified according to the location into two subtypes:[1]
- Infratentorial : mostly in children (70%)
- Supratentorial : mostly in adults (70%)