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Vascular Malformations 01

Topic: Behavior

Created on Saturday, February 24 2007 by

Last modified on Saturday, February 24 2007.

Which of the following statements regarding vascular malformations is FALSE?

 
        A) Cavernous angiomas have an initial presentation of focal epilepsy in 1/3 of cases.
 
        B) Arteriovenous malformations account for 1.5%-4% of all brain masses.
 
        C) Capillary telangiectases are similar to varicose veins.
 
        D) Arteriovenous malformations are associated with a 2/3 risk of clinically significant hemorrhage.
 
        E) Capillary telangiectases are usually incidental findings.
 

 


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This question was created on February 24, 2007 by .
This question was last modified on February 24, 2007.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) cavernous angiomas have an initial presentation of focal epilepsy in 1/3 of cases.

This answer is incorrect.


The statement, "cavernous angiomas have an initial presentation of focal epilepsy in 1/3 of cases." is true.
cavernous angiomas have an initial presentation of focal epilepsy in 1/3 of cases, are abnormal collections of thin-walled vessels without intervening brain tissue, and are associated with a 1% annual risk of acute hemorrhage.  (See References)

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B) arteriovenous malformations account for 1.5%-4% of all brain masses.

This answer is incorrect.


The statement, "arteriovenous malformations account for 1.5%-4% of all brain masses." is true.
arteriovenous malformations are associated with a 2/3 risk of clinically significant hemorrhage, are associated with a 2%-4% annual risk of acute hemorrhage, account for 1.5%-4% of all brain masses, have an initial presentation of cerebral hemorrhage in 50% of cases, and is a mass of thick-walled blood vessels of varying caliber.  (See References)

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C) capillary telangiectases are similar to varicose veins.

This answer is correct.


The statement, "capillary telangiectases are similar to varicose veins." is false.
capillary telangiectases rarely become symptomatic, consist of dilated capillaries separated by normal brain tissue, and are usually incidental findings.  (See References)

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D) arteriovenous malformations are associated with a 2/3 risk of clinically significant hemorrhage.

This answer is incorrect.


The statement, "arteriovenous malformations are associated with a 2/3 risk of clinically significant hemorrhage." is true.
arteriovenous malformations are associated with a 2/3 risk of clinically significant hemorrhage, are associated with a 2%-4% annual risk of acute hemorrhage, account for 1.5%-4% of all brain masses, have an initial presentation of cerebral hemorrhage in 50% of cases, and is a mass of thick-walled blood vessels of varying caliber.  (See References)

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E) capillary telangiectases are usually incidental findings.

This answer is incorrect.


The statement, "capillary telangiectases are usually incidental findings." is true.
capillary telangiectases rarely become symptomatic, consist of dilated capillaries separated by normal brain tissue, and are usually incidental findings.  (See References)

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References:

1. Prayson, R.A., and Goldblum, J.R. (Eds.) (2005). Neuropathology. Elsevier, Philadelphia.
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behavior
Vascular Malformations 01
Question ID: 02230701
Question written by . (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 02/24/2007
Modified: 02/24/2007
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