Picks up Carbol Fuchsin Stain - 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 03-26-2012
USMLE Forums Scout
 
Steps History: 1+CK+CS
Posts: 64
Threads: 12
Thanked 34 Times in 20 Posts
Reputation: 44
Bacteria Picks up Carbol Fuchsin Stain

A 45 year old immigrant from Cameroon in Central Africa has a history of cough going on for 8 months now. He comes to the emergency room because of the presence of blood in his sputum this morning. Liquid bactec analysis of his sputum identifies the radioactive bi-product of metabolism of a certain organism which picks up carbolfuscin stain and resist discoloration by acid-alcohol. which of the following is the most common site of systemic spread of this micro-organism:

a) Brain and meninges
b) Kidney
c) vertebrae
d) lymph nodes
e)

PART B

Biopsying which area of the meninges will most likely diagnose the disease?

a) meninges over the cortex
b) meninges in the spinal cord
c) meninges at the base of the brain
d) in hypothalamus
Reply With Quote Quick reply to this message



  #2  
Old 04-09-2012
USMLE Forums Scout
 
Steps History: CS Only
Posts: 10
Threads: 0
Thanked 4 Times in 1 Post
Reputation: 14
Default

The question is describing Acid-Fast stain. So it's T.B, So think of most common system spread of TB.
Part B; I'd think of the spinal cord (1st guess)!
Reply With Quote Quick reply to this message
  #3  
Old 04-09-2012
USMLE Forums Master
 
Steps History: 1+CK+CS
Posts: 1,406
Threads: 118
Thanked 647 Times in 409 Posts
Reputation: 657
Default

part 1: C?
part 2: B?
__________________
"inflammable means flammable!? What a country."
Reply With Quote Quick reply to this message
 
  #4  
Old 04-09-2012
DocSikorski's Avatar
USMLE Forums Master
 
Steps History: 1+CK+CS+3
Posts: 1,353
Threads: 94
Thanked 877 Times in 507 Posts
Reputation: 890
Default

C C......?
__________________
Ambition is a dream with a V8 engine. EP
Reply With Quote Quick reply to this message
  #5  
Old 04-09-2012
Valkyrie's Avatar
USMLE Forums Scout
 
Steps History: Not yet
Posts: 11
Threads: 0
Thanked 4 Times in 2 Posts
Reputation: 14
Default

vertebra,meninges over spinal cord
Reply With Quote Quick reply to this message
  #6  
Old 04-09-2012
numbndumb's Avatar
USMLE Forums Master
 
Steps History: 1+CK+CS+3
Posts: 529
Threads: 57
Thanked 284 Times in 152 Posts
Reputation: 294
Default

Quote:
Originally Posted by Desos View Post
A 45 year old immigrant from Cameroon in Central Africa has a history of cough going on for 8 months now. He comes to the emergency room because of the presence of blood in his sputum this morning. Liquid bactec analysis of his sputum identifies the radioactive bi-product of metabolism of a certain organism which picks up carbolfuscin stain and resist discoloration by acid-alcohol. which of the following is the most common site of systemic spread of this micro-organism:

a) Brain and meninges
b) Kidney
c) vertebrae
d) lymph nodes
e)

PART B

Biopsying which area of the meninges will most likely diagnose the disease?

a) meninges over the cortex
b) meninges in the spinal cord
c) meninges at the base of the brain
d) in hypothalamus
most common site of systemic spread .. isnt it the adrenals?? since its not in the options, then D.lymph nodes??
part B .. is it C.meninges at the base of the brain?

weird question though! dont they just do CSF examination instead of biopsying the brain? lol
Reply With Quote Quick reply to this message
  #7  
Old 04-09-2012
USMLE Forums Scout
 
Steps History: 1 + CK
Posts: 44
Threads: 2
Thanked 35 Times in 13 Posts
Reputation: 45
Default

D. scrofula is the most common extrapulm disease ( though I have read kidney somewhere too)
C. base of brain I guess
Reply With Quote Quick reply to this message
  #8  
Old 04-10-2012
USMLE Forums Addict
 
Steps History: Not yet
Posts: 138
Threads: 1
Thanked 46 Times in 26 Posts
Reputation: 56
Default

Part 1: d)
Part 2: c)
Reply With Quote Quick reply to this message
  #9  
Old 04-10-2012
Rookie's Avatar
USMLE Forums Guru
 
Steps History: 1+CK+CS
Posts: 394
Threads: 40
Thanked 218 Times in 99 Posts
Reputation: 228
Default TB

D) Common site - lymph node

C) TBM >>> basal exudates>> biopsy of basal meninges more sensitive
Reply With Quote Quick reply to this message



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
Congo Red Stain of a Thyroid Mass! scopusmount USMLE Step 1 Forum 2 11-11-2011 11:41 AM
What stain we use to visualize liomyoma (fibroid) kemoo USMLE Step 1 Forum 2 03-05-2011 08:27 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)