The life cycle of this parasite? - 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 01-06-2011
kemoo's Avatar
USMLE Forums Guru
 
Steps History: 1+CK+CS
Posts: 378
Threads: 161
Thanked 103 Times in 52 Posts
Reputation: 117
Microbiology The life cycle of this parasite?

A 23-year-old man who recently emigrated from Costa Rica is admitted to the emergency department with seizures. Findings on examination of his cerebrospinal fluid are within the reference range. A CT scan of the head shows numerous cortical lesions with calcifications; some have surrounding edema. The life cycle of the parasite causing these lesions involves

A) the bite of a blackfly to human

B) the bite of a mosquito to human

C) the bite of a sandfly to human

D) passage through cows

E) passage through pigs
Reply With Quote Quick reply to this message



  #2  
Old 01-06-2011
kieffer's Avatar
USMLE Forums Scout
 
Steps History: Step 1 Only
Posts: 16
Threads: 0
Thanked 11 Times in 6 Posts
Reputation: 21
Default

The only parasite that I can think of making cortical calcification is Toxoplasma and therefore I choose option E, transmission by pigs
Reply With Quote Quick reply to this message
  #3  
Old 01-06-2011
USMLE Forums Addict
 
Steps History: 1 + CK
Posts: 116
Threads: 7
Thanked 343 Times in 94 Posts
Reputation: 353
Default

answer is E. it is not toxo, but cysticercosis. mexican connection. associate toxo with congenital and AIDS.
Reply With Quote Quick reply to this message
 
  #4  
Old 01-06-2011
USMLE Forums Guru
 
Steps History: Step 1 Only
Posts: 487
Threads: 95
Thanked 1,459 Times in 357 Posts
Reputation: 1469
Arrow

The correct answer is E) neurocystisarcosis




Neurocysticercosis is a leading cause of seizures and epilepsy in the developing world and is an increasingly important health issue in the United States. Recent results from the Cysticercosis Working Group in Peru provide new evidence supporting the use of antiparasitic agents in highly selected patients with active cysts and seizures.

Cysticercosis is a parasitic infection that results from ingestion of eggs from the adult tapeworm, Taenia solium (T. solium). When cysticercosis involves the central nervous system, it is called neurocysticercosis. Neurocysticercosis is the most common parasitic infection of the brain and a leading cause of epilepsy in the developing world, especially Latin America, India, Africa, and China.

Don't eat too much pork...lol
Reply With Quote Quick reply to this message
The above post was thanked by:
karthiksamineni (08-14-2011), kemoo (01-06-2011), Mondoshawan (01-06-2011)



Reply

Tags
Microbiology-, Step-1-Questions

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
abdominal pain during her menstrual cycle doctorF USMLE Step 1 Forum 13 09-22-2013 07:10 AM
Residencies Life?? silakan_isi IMG Residency Match Forum 3 10-24-2010 03:08 PM
Cardiac Cycle Adjustments! donofitaly USMLE Step 1 Forum 2 10-15-2010 02:39 PM
Residencies Life? silakan_isi IMG Residency Match Forum 0 06-23-2010 05:24 AM
Krebs Cycle Mnemonic aalous USMLE Step 1 Mnemonics 1 04-06-2010 05:57 AM

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)