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Neurocutaneous Syndromes 01

Topic: Adult

Created on Saturday, February 17 2007 by jdmiles

Last modified on Saturday, February 17 2007.

Which of the following is characteristically associated with neurofibromatosis type 1?

 
        A) Lisch nodules
 
        B) Facial angiofibromas
 
        C) Shagreen patches
 
        D) Bilateral acoustic Schwannoma
 
        E) Poliosis
 

 


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This question was created on February 17, 2007 by jdmiles.
This question was last modified on February 17, 2007.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) Lisch nodules

This answer is correct.


Lisch nodules are small, whitish spots (hamartomas) in the iris of the eye. They are seen in most adults with NF1, and are pathognomonic.   (See References)

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B) facial angiofibromas

This answer is incorrect.


Facial angiofibromas are not characteristic of NF1. They are associated with tuberous sclerosis.   (See References)

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C) shagreen patches

This answer is incorrect.


Shagreen patches are not characteristic of NF1. They are associated with tuberous sclerosis.   (See References)

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D) bilateral acoustic Schwannoma

This answer is incorrect.


Bilateral acoustic Schwannoma is associated with neurofibromatosis type 2 (NF2).   (See References)

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E) poliosis

This answer is incorrect.


Poliosis (presence of a small patch of white hair) is not characteristic of NF1. It is associated with tuberous sclerosis.   (See References)

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References:

1. Neurofibromatosis Fact Sheet, NINDS. NIH Publication No. 06-2126
2. Victor, M., and Ropper, A.H. (2001). Adams and Victor's Principles of Neurology, 7th Edition. McGraw-Hill, New York. Pp. 1069-1076.
3. Santos, C.C., Miller, V.S., and Roach, E.S. (2004). Neurocutaneous syndromes. In Bradley, W.G., Daroff, R.B., Fenichel, G.M., and Jankovic, J. (Eds.). Neurology in Clinical Practice, 4th Edition. Butterworth Heinemann, Philadelphia. Pp. 1867-1900.
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adult
Neurocutaneous Syndromes 01
Question ID: 021707087
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 02/17/2007
Modified: 02/17/2007
Estimated Permutations: 84000

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