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Malformations 09

Topic: Pathology

Created on Sunday, February 15 2009 by gliageek

Last modified on Sunday, February 15 2009.


Courtesy of Dr. Mark Cohen
This cyst on the surface of the ventral pons is remnant of which of the following?

 
        A) Notochord
 
        B) Rathke's cleft
 
        C) Neurenteric canal
 
        D) Paraphysis
 
        E) Caudal cell mass
 

 


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This question was created on February 15, 2009 by gliageek.
This question was last modified on February 15, 2009.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) Notochord

This answer is correct.


This notochordal remnant goes by the name "ecchordosis physalifera"  (See References)

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B) Rathke's cleft

This answer is incorrect.


Suprasellar cyst  (See References)

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C) Neurenteric canal

This answer is incorrect.


Enterogenous cysts involving ventral spinal cord and column  (See References)

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D) Paraphysis

This answer is incorrect.


Colloid cyst (IIIrd ventricle)  (See References)

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E) Caudal cell mass

This answer is incorrect.


"Lipomas" of filum terminale  (See References)

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References:

1. Love, S., Louis, D.N., and Ellison, D.W. (2008). Greenfield's Neuropathology, 8th Edition. Oxford University Press, USA (ISBN:0340906820)Advertising:
2. Mehnert, F., Beschorner, R., Küker, W., Hahn, U., and Nägele, T. (). "Retroclival ecchordosis physaliphora: MR imaging and review of the literature." AJNR Am J Neuroradiol, 25(10) 1851-5. (PMID:15569763)
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pathology
Malformations 09
Question ID: 021509149
Question written by gliageek. (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 02/15/2009
Modified: 02/15/2009
Estimated Permutations: 120

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