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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 is most accurate regarding vascular malformations?

 
        A) Capillary telangiectases are associated with a 2/3 risk of clinically significant hemorrhage.
 
        B) Cavernous angiomas are dilated veins of the superficial or subcortical vasculature.
 
        C) Capillary telangiectases rarely become symptomatic.
 
        D) Cavernous angiomas have an initial presentation of cerebral hemorrhage in 50% of cases.
 
        E) Cavernous angiomas rarely become symptomatic.
 

 


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This question was last modified on February 23, 2007.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) capillary telangiectases are associated with a 2/3 risk of clinically significant hemorrhage.

This answer is incorrect.


The statement, "capillary telangiectases are associated with a 2/3 risk of clinically significant hemorrhage." 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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B) cavernous angiomas are dilated veins of the superficial or subcortical vasculature.

This answer is incorrect.


The statement, "cavernous angiomas are dilated veins of the superficial or subcortical vasculature." is false.
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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C) capillary telangiectases rarely become symptomatic.

This answer is correct.


The statement, "capillary telangiectases rarely become symptomatic." 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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D) cavernous angiomas have an initial presentation of cerebral hemorrhage in 50% of cases.

This answer is incorrect.


The statement, "cavernous angiomas have an initial presentation of cerebral hemorrhage in 50% of cases." is false.
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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E) cavernous angiomas rarely become symptomatic.

This answer is incorrect.


The statement, "cavernous angiomas rarely become symptomatic." is false.
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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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: 02/23/2007
Modified: 02/23/2007
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