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Vascular Malformations 06

Topic: Pathology

Created on Thursday, November 29 2007 by jdmiles

Last modified on Thursday, November 29 2007.

Which of the following statements about the type of lesion seen in this photomicrograph is most accurate?


 
        A) This is a venous angioma
 
        B) This type of lesion consists of dilated capillaries separated by normal brain tissue
 
        C) This is a cavernous angioma
 
        D) Lesions of this type are usually incidental findings
 
        E) Patients with lesions of this kind have an initial presentation of cerebral hemorrhage in 50% of cases
 

 


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This question was created on November 29, 2007 by jdmiles.
This question was last modified on November 29, 2007.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) this is a venous angioma

This answer is incorrect.


This photomicrograph shows a cavernous angioma. Cavernous angiomas are most often seen in young adults, and 1/3 of cases present with focal seizures. There is an approximately 1% annual risk of hemorrhage with this type of lesion. Microscopically, cavernous angiomas appear as clusters of dilated, thin-walled blood vessels with no brain tissue in between. Unlike AVMs, there is no arterial component.  (See References)

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B) this type of lesion consists of dilated capillaries separated by normal brain tissue

This answer is incorrect.


This photomicrograph shows a cavernous angioma. Cavernous angiomas are most often seen in young adults, and 1/3 of cases present with focal seizures. There is an approximately 1% annual risk of hemorrhage with this type of lesion. Microscopically, cavernous angiomas appear as clusters of dilated, thin-walled blood vessels with no brain tissue in between. Unlike AVMs, there is no arterial component.  (See References)

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C) this is a cavernous angioma

This answer is correct.


This photomicrograph shows a cavernous angioma. Cavernous angiomas are most often seen in young adults, and 1/3 of cases present with focal seizures. There is an approximately 1% annual risk of hemorrhage with this type of lesion. Microscopically, cavernous angiomas appear as clusters of dilated, thin-walled blood vessels with no brain tissue in between. Unlike AVMs, there is no arterial component.  (See References)

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D) lesions of this type are usually incidental findings

This answer is incorrect.


This photomicrograph shows a cavernous angioma. Cavernous angiomas are most often seen in young adults, and 1/3 of cases present with focal seizures. There is an approximately 1% annual risk of hemorrhage with this type of lesion. Microscopically, cavernous angiomas appear as clusters of dilated, thin-walled blood vessels with no brain tissue in between. Unlike AVMs, there is no arterial component.  (See References)

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E) patients with lesions of this kind have an initial presentation of cerebral hemorrhage in 50% of cases

This answer is incorrect.


This photomicrograph shows a cavernous angioma. Cavernous angiomas are most often seen in young adults, and 1/3 of cases present with focal seizures. There is an approximately 1% annual risk of hemorrhage with this type of lesion. Microscopically, cavernous angiomas appear as clusters of dilated, thin-walled blood vessels with no brain tissue in between. Unlike AVMs, there is no arterial component.  (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
Vascular Malformations 06
Question ID: 112907112
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 11/29/2007
Modified: 11/29/2007
Estimated Permutations: 297000

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