There are 486 questions on various topics in Neurology in the FrontalCortex neurology question bank.

NeurOnc 01

Topic: Pathology

Created on Sunday, February 8 2009 by gliageek

Last modified on Sunday, February 8 2009.


Courtesy of Dr. Mark Cohen

All of the following statements regarding this tumor are true EXCEPT:

 
        A) They are WHO Grade II tumors
 
        B) It typically occurs in elderly males
 
        C) They contain abundant intracellular glycogen
 
        D) It occurs most commonly in the cerebellopontine angle and conus medullaris
 
        E) They are immunoreactive with antibodies to epithelial membrane antibodies
 

 


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This question was created on February 08, 2009 by gliageek.
This question was last modified on February 08, 2009.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) They are WHO Grade II tumors

This answer is incorrect.


Despite their bland appearance, clear cell meningiomas tend to recur and behave aggressively  (See References)

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B) It typically occurs in elderly males

This answer is correct.


Clear cell menigiomas are typically seen in young women  (See References)

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C) They contain abundant intracellular glycogen

This answer is incorrect.


The clear cell appearance is due to intracellular glycogen, and should not be confused with extracellular mucopolysaccharide accumulation characteristic of microcystic menigiomas  (See References)

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D) It occurs most commonly in the cerebellopontine angle and conus medullaris

This answer is incorrect.


These are the most typical locations for clear cell meningiomas.  (See References)

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E) They are immunoreactive with antibodies to epithelial membrane antibodies

This answer is incorrect.


For all its shortcomings, EMA is the most reliable immunohistochemical stain in the diagnosis of meningiomas  (See References)

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References:

1. Prayson, R.A., and Goldblum, J.R. (Eds.) (2005). Neuropathology. Elsevier Churchill Livingstone, Philadelphia. (ISBN:0443066582)Advertising:
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pathology
NeurOnc 01
Question ID: 020809062
Question written by gliageek. (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 02/08/2009
Modified: 02/08/2009
Estimated Permutations: 120

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