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Infections 12

Topic: Imaging

Created on Thursday, February 14 2013 by gliageek

Last modified on Thursday, February 14 2013.


Courtesy of Dr. Mark Cohen
Which of the following risk factors as most commonly associated with this form of meningitis?

 
        A) Swimming in contaminated fresh water
 
        B) Exposure to bat guano
 
        C) Travel to the Southwestern United States
 
        D) Near drowning
 
        E) Diabetic ketoacidosis
 

 


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This question was created on February 14, 2013 by gliageek.
This question was last modified on February 14, 2013.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) Swimming in contaminated fresh water

This answer is incorrect.


Swimming in contaminated fresh water is typical for patient's who developed primary amoebic meningoencephalitis secondary to Naegleria species.  (See References)

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B) Exposure to bat guano

This answer is incorrect.


Bat guano may contain cryptococcal or rabies organisms.  (See References)

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C) Travel to the Southwestern United States

This answer is correct.


Coccidioides immitis is found predominately within the Southwestern United States in Northern Mexico. Dissemination to the central nervous system is uncommon.  (See References)

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D) Near drowning

This answer is incorrect.


Near drowning, often associated with inhalation occluded water, may precede central nervous system infection by Pseudallescheria boydi, afilamentous mold morphologically similar to Aspergillus.  (See References)

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E) Diabetic ketoacidosis

This answer is incorrect.


Patients with diabetic ketoacidosis are at increased risk for invasive mucorales (mold) infections, especially rhinocerebral mucormycosis.  (See References)

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References:

1. Parish, J.M., and Blair, J.E. (2008). "Coccidioidomycosis." Mayo Clin Proc, 83(3) 343-48; quiz 348-9. (PMID:18316002)
2. Vinh, D.C. (2011). "Coccidioidal meningitis: disseminated disease in patients without HIV/AIDS." Medicine (Baltimore), 90(1) 87. (PMID:21200190)
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imaging
Infections 12
Question ID: 021413098
Question written by gliageek. (C) FrontalCortex.com 2006-2009, all rights reserved. Created: 02/14/2013
Modified: 02/14/2013
Estimated Permutations: 120

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