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  #1  
Old 02-23-2011
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Arrow Practice Question, Microbiology #1

Which one of the following infections would cause eosinophilia?

A. Plasmodium falciparum
B. Entamoeba Histolytica
C. Enterobius
D. Strongyloides Stercoralis
E. Ascaris Lumbricoides (adult)

(yikes, got this from Goljan)
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Old 02-23-2011
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Quote:
Originally Posted by apx85 View Post
Which one of the following infections would cause eosinophilia?

A. Plasmodium falciparum
B. Entamoeba Histolytica
C. Enterobius
D. Strongyloides Stercoralis
E. Ascaris Lumbricoides (adult)

(yikes, got this from Goljan)
A. Ascaris Lumbricoides
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Old 02-23-2011
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Arrow C) Enterobius

Let me see...

A. Plasmodium falciparum - Malaria does not cause eosinophilia
B. Entamoeba Histolytica - bloody diarrhea and liver abscess - no chance
C. Enterobius - pinworm -- hmm clinking clicking ...lol
D. Strongyloides Stercoralis - strongyloidiasis - threadworm - nope (huge one - eosinophil will run away)
E. Ascaris Lumbricoides (adult) - roundworm - I don't thinks all


Pinworm can cause eosinophilia. So I'll go with C) Enterobius
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Old 02-23-2011
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How about D. Strongyloides? because they penetrate through tissues.
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Old 02-23-2011
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is it e.ascaris lumbricoides
interesting question....waiting for the answer
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Old 02-23-2011
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We're all choosing different answers!

I'm going to go with doctorsmonsters on this one: Strongyloides.

aktorque's Enterobius or patelMD's Ascaris are the next best answers, because they can produce eosinophilia when they're migrating through tissue.

Entamoeba usually not eosinophilic
Plasmodium not eosinophilic
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Quote:
Originally Posted by Mondoshawan View Post
We're all choosing different answers!

I'm going to go with doctorsmonsters on this one: Strongyloides.

aktorque's Enterobius or patelMD's Ascaris are the next best answers, because they can produce eosinophilia when they're migrating through tissue.

Entamoeba usually not eosinophilic
Plasmodium not eosinophilic
hehe....ya
i am waiting for apx85 to give an answer with explanation to this one...
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Quote:
Originally Posted by aktorque View Post
Let me see...

A. Plasmodium falciparum - Malaria does not cause eosinophilia
B. Entamoeba Histolytica - bloody diarrhea and liver abscess - no chance
C. Enterobius - pinworm -- hmm clinking clicking ...lol
D. Strongyloides Stercoralis - strongyloidiasis - threadworm - nope (huge one - eosinophil will run away)
E. Ascaris Lumbricoides (adult) - roundworm - I don't thinks all


Pinworm can cause eosinophilia. So I'll go with C) Enterobius
yes that was a wrong guess... after reading on invasive parasites and cause of eosinophilia... Strongyloides Stercoralis - strongyloidiasis - threadworm is the correct one.

My final ans is D) Strongyloides Stercoralis
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Old 02-23-2011
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Quote:
Originally Posted by apx85 View Post
Which one of the following infections would cause eosinophilia?

A. Plasmodium falciparum
B. Entamoeba Histolytica
C. Enterobius
D. Strongyloides Stercoralis
E. Ascaris Lumbricoides (adult)

(yikes, got this from Goljan)
D.strongyloides stercoralis
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Old 02-23-2011
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Correct Answer D is correct!

The key to this question, as doctorsmonsters stated, is to recognize which of these bugs is an invasive helminth. Of the choices listed, only strongyloides is invasive (penetrates mucosa of small intestine and travels to lung). The key to rule out ascaris is that adult ascaris worms do not invade tissue, they only obstruct bowel. Similarly, Enterobius does not invade GI mucosa.

Protozoa infections do not produce eosinophilia, therefore you can rule out entamoeba and malaria.

NOTE: The larvae of ascaris do cause eosinophilia because they invade lung tissue, but the answer choice here said adult.

Reference: Page 47 of Goljan's Audio Transcript

Tough question, great job for those of you who answered correctly!
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