Vascular Malformations 02

Topic: Pathology

Created on Saturday, April 28 2007 by jdmiles

Last modified on Saturday, April 28 2007.

 
        A) This is a venous angioma
 
        B) This is a capillary telangiectasia
 
        C) Lesions of this type rarely become symptomatic
 
        D) This is an AVM
 
        E) Lesions of this type are usually incidental findings
 

 

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This question was created on April 28, 2007 by jdmiles.
This question was last modified on April 28, 2007.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS

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A) this is a venous angioma

This answer is incorrect.

The photomicrograph shows an arteriovenous malformation. AVMs are masses of thick-walled blood vessels of varying caliber. They 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, and have an initial presentation of cerebral hemorrhage in 50% of cases.  (See References)

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B) this is a capillary telangiectasia

This answer is incorrect.

The photomicrograph shows an arteriovenous malformation. AVMs are masses of thick-walled blood vessels of varying caliber. They 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, and have an initial presentation of cerebral hemorrhage in 50% of cases.  (See References)

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C) lesions of this type rarely become symptomatic

This answer is incorrect.

The photomicrograph shows an arteriovenous malformation. AVMs are masses of thick-walled blood vessels of varying caliber. They 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, and have an initial presentation of cerebral hemorrhage in 50% of cases. Capillary telangiectases and venous angiomas are vascular malformations that rarely become symptomatic.  (See References)

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D) this is an AVM

This answer is correct.

The photomicrograph shows an arteriovenous malformation. AVMs are masses of thick-walled blood vessels of varying caliber. They 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, and have an initial presentation of cerebral hemorrhage in 50% of cases.  (See References)

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E) lesions of this type are usually incidental findings

This answer is incorrect.

The photomicrograph shows an arteriovenous malformation. AVMs are masses of thick-walled blood vessels of varying caliber. They 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, and have an initial presentation of cerebral hemorrhage in 50% of cases. They are not usually incidental findings. Capillary telangiectases are vascular malformations which usually are 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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pathology
Vascular Malformations 02
Question ID: 042807149
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 04/28/2007
Modified: 04/28/2007
Estimated Permutations: 151200