endocrine - 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 01-20-2012
USMLE Forums Addict
 
Steps History: ---
Posts: 191
Threads: 69
Thanked 149 Times in 75 Posts
Reputation: 159
Default endocrine

A 23-year-old man has experienced headaches, polyuria, and visual problems for the past 3 months. On physicalexamination, he has bilateral temporal visual field defects. CT scan of the head shows a large, partially calcified, cysticmass in the sellar and suprasellar areas. Laboratory findings show a serum prolactin concentration of 60 ng/mL and serum
sodium level of 152 mEq/L. Serum calcium, phosphate, and glucose levels are normal. The mass is excised, and histologic
examination shows a mixture of squamous epithelial elements and lipid-rich debris containing cholesterol crystals. Which
of the following lesions is most consistent with the clinical laboratory findings in this patient?
□ (A) Craniopharyngioma that has destroyed the posterior pituitary
□ (B) Prolactin-secreting adenohypophyseal macroadenoma
(C) Multiple endocrine neoplasia type I
□ (D) Metastases from a lung neoplasm in the sella and brain
□ (E) Multiple endocrine neoplasia type II
Reply With Quote Quick reply to this message



  #2  
Old 01-20-2012
Hitman's Avatar
USMLE Forums Master
 
Steps History: Not yet
Posts: 928
Threads: 17
Thanked 539 Times in 375 Posts
Reputation: 549
Default

Ans : A ...... craniopharyngioma has cholestrol crystals and destruction of post pituitary leads to polyuria and loss of dopamine ........
Reply With Quote Quick reply to this message
The above post was thanked by:
anomali (01-20-2012), menatallah Elgohary (01-20-2012)
  #3  
Old 01-20-2012
USMLE Forums Addict
 
Steps History: Not yet
Posts: 191
Threads: 8
Thanked 121 Times in 76 Posts
Reputation: 131
Default

Its A.Craniopharyngioma affecting post. pituatary is arised from rathkes poucch is a supratentorial tumor also cause Bitemporal hemianopia because of pressure on optic chiasma
Reply With Quote Quick reply to this message
The above post was thanked by:
menatallah Elgohary (01-20-2012)
 
  #4  
Old 01-20-2012
dr.Irina's Avatar
USMLE Forums Veteran
 
Steps History: 1 + CK
Posts: 229
Threads: 6
Thanked 69 Times in 61 Posts
Reputation: 79
Default

A headaches, polyuria, and visual problems
Reply With Quote Quick reply to this message
The above post was thanked by:
menatallah Elgohary (01-20-2012)
  #5  
Old 01-20-2012
USMLE Forums Addict
 
Steps History: ---
Posts: 191
Threads: 69
Thanked 149 Times in 75 Posts
Reputation: 159
Thumbs Up

u are all correct its A craniophyrangioma which causes the pressure manifestation on the optic chiasma with bitemporal hemianopia and also with manifestation of high prolactin it may caused its damage in anterior pituitary or by pressur on the stalk also with polyuria it mostly affected posterior pituitary or even hypothalamus or both
Reply With Quote Quick reply to this message
The above post was thanked by:
Dr. Mexito (01-20-2012), Hitman (01-20-2012)



Reply

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
(Endocrine) drnrpatel USMLE Step 3 Forum 4 10-21-2011 12:14 PM
(Endocrine) drnrpatel USMLE Step 3 Forum 4 10-20-2011 08:58 PM
(Endocrine) drnrpatel USMLE Step 3 Forum 3 10-20-2011 08:45 PM
(Endocrine) drnrpatel USMLE Step 3 Forum 5 10-20-2011 08:41 PM
Endocrine drnrpatel USMLE Step 2 CK Forum 4 10-18-2011 07:33 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)