Cause of diarrhea - USMLE Forums
USMLE Forums Logo
USMLE Forums         Your Reliable USMLE Online Community     Members     Posts
Home
USMLE Articles
USMLE News
USMLE Polls
USMLE Books
USMLE Apps
Go Back   USMLE Forums > USMLE Step 1 Forum

USMLE Step 1 Forum USMLE Step 1 Discussion Forum: Let's talk about anything related to USMLE Step 1 exam


Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 02-20-2010
USMLE Forums Newbie
 
Steps History: Step 1 Only
Posts: 2
Threads: 1
Thanked 5 Times in 2 Posts
Reputation: 15
Question Cause of diarrhea

A 33 years old HIV patient developed severe watery diarrhea resistant to all treatments. Stool acid fast stain showed elliptical eggs.
What is the most likely diagnosis?

A- Isospora belli
B- Cryptosporidium parvum
C- Cryptococcus
D- Giardia labmlia
E- Norwalk virus
Reply With Quote Quick reply to this message
The above post was thanked by:
wahaha007 (02-21-2010)



  #2  
Old 02-21-2010
mary's Avatar
USMLE Forums Guru
 
Steps History: 1+CK+CS
Posts: 339
Threads: 12
Thanked 426 Times in 143 Posts
Reputation: 436
Default Re: Cause of diarrhea

Isospora I think
Reply With Quote Quick reply to this message
  #3  
Old 02-21-2010
USMLE Forums Scout
 
Steps History: 1 + CK
Posts: 10
Threads: 1
Thanked 3 Times in 3 Posts
Reputation: 13
Default

its cryptosporidium parvum which is acid fast organism causing self limiting watery diarrhea in IC pts. also resistant to chlorination
Reply With Quote Quick reply to this message
The above post was thanked by:
wahaha007 (02-21-2010)
 
  #4  
Old 02-21-2010
laithbv's Avatar
USMLE Forums Guru
 
Steps History: 1 + CS
Posts: 304
Threads: 9
Thanked 311 Times in 136 Posts
Reputation: 321
Default

Quote:
Originally Posted by sanket_dalwadi View Post
its cryptosporidium parvum which is acid fast organism causing self limiting watery diarrhea in IC pts. also resistant to chlorination
But isospora is also acid fast and causes diarrhea in HIV patients
Reply With Quote Quick reply to this message
  #5  
Old 02-22-2010
YoramFishke's Avatar
USMLE Forums Veteran
 
Steps History: 1+CK+CS
Posts: 248
Threads: 11
Thanked 311 Times in 127 Posts
Reputation: 341
Arrow The correct answer

It's funny how they play with us with words. Elliptical is a round shape with the stretched horizontal axis while oval is a round shape with elongated vertical axis. Isospora has elliptical shaped eggs. You can try TMP/SMX for treatment. Cryptosporidium has oval eggs. No treatment is successful. The correct answer is A
Reply With Quote Quick reply to this message
The above post was thanked by:
Peets (02-24-2010), prabin (11-26-2012)
  #6  
Old 02-24-2010
USMLE Forums Scout
 
Steps History: Not yet
Posts: 22
Threads: 6
Thanked 43 Times in 14 Posts
Reputation: 63
Default the answer is giardia~ what are you guys talking about

its isospora guys!! the presentation is very much a feature of isospora!! especially when he says elliptical cysts and treatment failure and acid fast .. treatment failure is typical of isosporaa and moreso in hiv patients

Last edited by Aditya; 02-24-2010 at 08:15 AM. Reason: mistake
Reply With Quote Quick reply to this message
The above post was thanked by:
Peets (02-24-2010), prabin (11-26-2012), wahaha007 (02-25-2010)
  #7  
Old 02-24-2010
USMLE Forums Scout
 
Steps History: Not yet
Posts: 22
Threads: 6
Thanked 43 Times in 14 Posts
Reputation: 63
Default isospora

the ans is thus 1
Reply With Quote Quick reply to this message
  #8  
Old 05-19-2016
USMLE Forums Scout
 
Steps History: ---
Posts: 28
Threads: 5
Thanked 4 Times in 4 Posts
Reputation: 14
Default

Quote:
Originally Posted by YoramFishke View Post
It's funny how they play with us with words. Elliptical is a round shape with the stretched horizontal axis while oval is a round shape with elongated vertical axis. Isospora has elliptical shaped eggs. You can try TMP/SMX for treatment. Cryptosporidium has oval eggs. No treatment is successful. The correct answer is A
thank you
Reply With Quote Quick reply to this message



Reply

Tags
Gastrointestinal-Tract-, Microbiology-

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the USMLE Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Medical School
Choose "---" if you don't want to tell. AMG for US & Canadian medical schools. IMG for all other medical schools.
USMLE Steps History
What steps finished! Example: 1+CK+CS+3 = Passed Step 1, Step 2 CK, Step 2 CS, and Step 3.

Choose "---" if you don't want to tell.

Favorite USMLE Books
What USMLE books you really think are useful. Leave blank if you don't want to tell.
Location
Where you live. Leave blank if you don't want to tell.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Diarrhea Transmural inflammation alindawater USMLE Step 1 Classic Clues 3 02-16-2017 08:59 PM
Black Stool + Constipation OR Diarrhea rasheed USMLE Step 2 CK Classic Clues 3 07-09-2016 11:58 AM
Diarrhea and Weight Loss! lee-usmle USMLE Step 1 Forum 3 01-18-2010 06:38 PM

RSS Feed
Find Us on Facebook
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

USMLE® & other trade marks belong to their respective owners, read full disclaimer
USMLE Forums created under Creative Commons 3.0 License. (2009-2014)