Diffuse (Fibrillary) Astrocytomas 01

Topic: Adult

Created on Sunday, October 12 2008 by jdmiles

Last modified on Sunday, October 12 2008.

 
        A) They account for about 10% of primary intracranial neoplasms
 
        B) Pure astrocytomas have a worse prognosis than do mixed oligodendrogliomas or oligoastrocytomas
 
        C) They tend to have well-defined margins
 
        D) Survival averages 2 to 3 years for patients with Grade II diffuse (fibrillary) astrocytomas
 
        E) They account for about 60% of primary intracranial neoplasms
 

 

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This question was created on October 12, 2008 by jdmiles.
This question was last modified on October 12, 2008.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS

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A) They account for about 10% of primary intracranial neoplasms

This answer is incorrect.

Diffuse (fibrillary) astrocytomas make up about 40% of primary intracranial tumors.   (See References)

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B) Pure astrocytomas have a worse prognosis than do mixed oligodendrogliomas or oligoastrocytomas

This answer is correct.

Pure astrocytomas have a worse prognosis than do mixed oligodendrogliomas or oligoastrocytomas   (See References)

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C) They tend to have well-defined margins

This answer is incorrect.

Diffuse astrocytomas are characterized by invasive growth.  (See References)

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D) Survival averages 2 to 3 years for patients with Grade II diffuse (fibrillary) astrocytomas

This answer is incorrect.

Survival averages 5 to 10 years for patients with Grade II diffuse (fibrillary) astrocytomas   (See References)

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E) They account for about 60% of primary intracranial neoplasms

This answer is incorrect.

Diffuse (fibrillary) astrocytomas make up about 40% of primary intracranial tumors.   (See References)

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References:

1. Prayson, R.A., and Goldblum, J.R. (Eds.) (2005). Neuropathology. Elsevier Churchill Livingstone, Philadelphia. (ISBN:0443066582)

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adult
Diffuse (Fibrillary) Astrocytomas 01
Question ID: 101208106
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 10/12/2008
Modified: 10/12/2008
Estimated Permutations: 50400