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Vascular Malformations 01

Topic: Behavior

Created on Friday, February 23 2007 by

Last modified on Friday, February 23 2007.

Which of the following statements regarding vascular malformations is FALSE?

 
        A) Arteriovenous malformations have an initial presentation of cerebral hemorrhage in 50% of cases.
 
        B) Arteriovenous malformations is a mass of thick-walled blood vessels of varying caliber.
 
        C) Venous angiomas are similar to varicose veins.
 
        D) Capillary telangiectases are usually incidental findings.
 
        E) Arteriovenous malformations are dilated veins of the superficial or subcortical vasculature.
 

 


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This question was created on February 23, 2007 by .
This question was last modified on February 23, 2007.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) arteriovenous malformations have an initial presentation of cerebral hemorrhage in 50% of cases.

This answer is incorrect.


The statement, "arteriovenous malformations have an initial presentation of cerebral hemorrhage in 50% of cases." 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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B) arteriovenous malformations is a mass of thick-walled blood vessels of varying caliber.

This answer is incorrect.


The statement, "arteriovenous malformations is a mass of thick-walled blood vessels of varying caliber." 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) venous angiomas are similar to varicose veins.

This answer is incorrect.


The statement, "venous angiomas are similar to varicose veins." is true.
venous angiomas rarely become symptomatic, are similar to varicose veins, and are dilated veins of the superficial or subcortical vasculature.  (See References)

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D) 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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E) arteriovenous malformations are dilated veins of the superficial or subcortical vasculature.

This answer is correct.


The statement, "arteriovenous malformations are dilated veins of the superficial or subcortical vasculature." is false.
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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References:

1. Prayson, R.A., and Goldblum, J.R. (Eds.) (2005). Neuropathology. Elsevier, Philadelphia.
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Vascular Malformations 01
Question ID: 02230701
Question written by . (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 02/23/2007
Modified: 02/23/2007
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