Vascular Malformations 02

Topic: Pathology

Created on Saturday, April 28 2007 by jdmiles

Last modified on Saturday, April 28 2007.

 
        A) Lesions of this type are dilated veins of the superficial or subcortical vasculature
 
        B) This is an arteriovenous malformation
 
        C) This is a venous angioma
 
        D) Lesions of this type are abnormal collections of thin-walled vessels without intervening brain tissue
 
        E) This type of lesion consists of dilated capillaries separated by normal brain tissue
 

 

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

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 dilated veins. Venous angiomas are vascular malformations which are dilated veins of the superficial or subcortical vasculature.  (See References)

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B) this is an arteriovenous malformation

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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C) 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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D) lesions of this type are abnormal collections of thin-walled vessels without intervening brain tissue

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. Cavernous angiomas are abnormal collections of thin-walled vessels without intervening brain tissue.  (See References)

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

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 consist of dilated capillaries separated by normal brain tissue.  (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