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Tomaculae

Topic: Physiology

Created on Friday, September 19 2008 by jdmiles

Last modified on Friday, September 19 2008.

Tomaculae are characteristic of which of the following disorders?

 
        A) Inclusion body myositis
 
        B) Charcot-Marie-Tooth type 1
 
        C) Hereditary neuropathy with liability to pressure palsy
 
        D) Tay-Sachs disease
 
        E) Fabry disease
 

 


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This question was created on September 19, 2008 by jdmiles.
This question was last modified on September 19, 2008.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) Inclusion body myositis

This answer is incorrect.


Tomaculae are not a characteristic feature of inclusion body myositis  (See References)

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B) Charcot-Marie-Tooth type 1

This answer is incorrect.


Onion bulbs are a more characteristic feature of Charcot-Marie-Tooth type 1 than tomaculae  (See References)

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C) Hereditary neuropathy with liability to pressure palsy

This answer is correct.


Hereditary neuropathy with liability to pressure palsy (HNPP) is a genetic disorder resulting in neuropathy and a tendency to develop peripheral mononeuropathies. On microscopic examination of axons from people with HNPP, tomaculae (sausage-like bulges of myelin) are a typical finding.  (See References)

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D) Tay-Sachs disease

This answer is incorrect.


Tomaculae are not a characteristic feature of Tay Sachs disease  (See References)

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E) Fabry disease

This answer is incorrect.


Tomaculae are not a characteristic feature of Fabry disease  (See References)

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References:

1. Horowitz, S.H., Spollen, L.E., and Yu, W. (2004). "Hereditary neuropathy with liability to pressure palsy: fulminant development with axonal loss during military training." J Neurol Neurosurg Psychiatry, 75(11) 1629-31. (PMID:15489403)
2. Prayson, R.A., and Goldblum, J.R. (Eds.) (2005). Neuropathology. Elsevier Churchill Livingstone, Philadelphia. (ISBN:0443066582)Advertising:
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physiology
Tomaculae
Question ID: 091908209
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 09/19/2008
Modified: 09/19/2008
Estimated Permutations: 600

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