The FrontalCortex question bank can help you study for the Residency Inservice Training Exam (RITE exam).

Upward Gaze

Topic: Anatomy

Created on Sunday, February 1 2009 by dr. no

Last modified on Sunday, February 1 2009.

A 72 year old man presents with a month history of progressive difficulty in upward gaze and was found on exam mid-dilated mildly reactive pupils, and convergence-retraction nystagmus. Where is the lesion?

 
        A) Non-dominant parietal lobe
 
        B) Midbrain tectal region
 
        C) Lower Pons
 
        D) Dominant parietal lobe
 
        E) Thalamus
 

 


Back to the question = Go back to the top of the page.
See another question like this one = Reload a different version of this question ().
Click here for a random question = Load a random question from the database.
Clone this question = Use this question as a template to create a totally NEW question.
Rate this question = Enter detailed rating for this question!
Average user rating for this question = 5 = How users like you have rated this question.
This question was created on February 01, 2009 by dr. no.
This question was last modified on February 01, 2009.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) Non-dominant parietal lobe

This answer is incorrect.


A lesion producing these findings occurs in the midbrain tectal region. It usually occurs by extra-axial compression on the quadrigeminal plate. These findings are consistent with Parinaud's syndrome  (See References)

Back to the questionSee another question like this oneClick here for a random questionClone this question Rate this questionAverage user rating for this question = 5
Please log in if you want to rate questions.

 

 

 

 

 

 

 

 

 




B) Midbrain tectal region

This answer is correct.


A lesion producing these findings occurs in the midbrain tectal region. It usually occurs by extra-axial compression on the quadrigeminal plate. These findings are consistent with Parinaud's syndrome  (See References)

Back to the questionSee another question like this oneClick here for a random questionClone this question Rate this questionAverage user rating for this question = 5
Please log in if you want to rate questions.

 

 

 

 

 

 

 

 

 




C) Lower Pons

This answer is incorrect.


A lesion producing these findings occurs in the midbrain tectal region. It usually occurs by extra-axial compression on the quadrigeminal plate. These findings are consistent with Parinaud's syndrome  (See References)

Back to the questionSee another question like this oneClick here for a random questionClone this question Rate this questionAverage user rating for this question = 5
Please log in if you want to rate questions.

 

 

 

 

 

 

 

 

 




D) Dominant parietal lobe

This answer is incorrect.


A lesion producing these findings occurs in the midbrain tectal region. It usually occurs by extra-axial compression on the quadrigeminal plate. These findings are consistent with Parinaud's syndrome  (See References)

Back to the questionSee another question like this oneClick here for a random questionClone this question Rate this questionAverage user rating for this question = 5
Please log in if you want to rate questions.

 

 

 

 

 

 

 

 

 




E) Thalamus

This answer is incorrect.


A lesion producing these findings occurs in the midbrain tectal region. It usually occurs by extra-axial compression on the quadrigeminal plate. These findings are consistent with Parinaud's syndrome  (See References)

Back to the questionSee another question like this oneClick here for a random questionClone this question Rate this questionAverage user rating for this question = 5
Please log in if you want to rate questions.

 

 

 

 

References:

1. Leigh, R.J., and Zee, D.S. (2006). The Neurology of Eye Movements, 4th Edition. Oxford University Press, Oxford. (ISBN:0195300904)Advertising:
Back to the questionSee another question like this oneClick here for a random questionClone this question Rate this questionAverage user rating for this question = 5
Please log in if you want to rate questions.

 

FrontalCortex.com -- Neurology Review Questions -- Neurology Boards -- Board Review -- Residency Inservice Training Exam -- RITE Exam Review
anatomy
Upward Gaze
Question ID: 020109085
Question written by dr. no. (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 02/01/2009
Modified: 02/01/2009
Estimated Permutations: 120

User Comments About This Question:

1 user entries
 

rednucleus
anatomy The Pupils Feb 05, 2009 @ 04:26

Thanks for the question. Please post more.

I would suggest the use of "sluggishly" reactive pupils rather than "mildly" reactive pupils; I think the term "mild" is somewhat misleading in this Parinaud's, i.e. the pupils could not be mildly, moderately, or severely reactive.  

Regards and the very best...

Amin

 



 
Please log in if you'd like to add a comment.