Question:

Regarding the histopathology of malignant gliomas of the optic pathways which of the following is true:
1. These are basically low grade gliomas.
2. They can be classified as either anaplastic Astrocytoma or a glioblastoma multiforme
3. These tumors do not show necrosis.
4. These lesions are congenital hamartomas.





Answer:

The correct answer for the question "Regarding the histopathology of malignant gliomas of the optic pathways which of the following is true:" is:

2. They can be classified as either anaplastic Astrocytoma or a glioblastoma multiforme



Explanation

These tumors are high grade gliomas and invariably malignant. The anaplastic Astrocytoma does not show necrosis while glioblastoma multiforme have evidence of necrosis.



From the manuscript:
Glioblastoma of the optic pathways: An Atypical case
Radiology Case. 2009 Sep; 3(9):22-28


This article belongs to the Neuro section.




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From the manuscript

Glioblastoma of the optic pathways: An Atypical case

Free full text article: Glioblastoma of the optic pathways: An Atypical case

Abstract
We present a case of glioblastoma multiforme of the optic pathways in a 68 year old lady. Glioblastomas of the optic pathways are rare tumors; the predominant non enhancing component and the vast extent of involvement makes this a unique case. This case report further increases the database of knowledge available on the MRI characteristics of malignant optic glioma of adulthood.






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