Vascular Malformations 06

Topic: Pathology

Created on Thursday, November 29 2007 by jdmiles

Last modified on Thursday, November 29 2007.

 
        A) This is a capillary telangiectasia
 
        B) This type of lesion consists of dilated capillaries separated by normal brain tissue
 
        C) Lesions of this type represent a tangled mass of anastamosing veins and arteries
 
        D) Lesions of this type are dilated veins of the superficial or subcortical vasculature
 
        E) This is a cavernous angioma
 

 

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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

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A) this is a capillary telangiectasia

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) lesions of this type represent a tangled mass of anastamosing veins and arteries

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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D) lesions of this type are dilated veins of the superficial or subcortical vasculature

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) 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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References:

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

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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