Reducing incidence of a cancer..... - 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 06-14-2012
USMLE Forums Master
 
Steps History: 1+CK+CS+3
Posts: 791
Threads: 76
Thanked 673 Times in 317 Posts
Reputation: 691
Question Reducing incidence of a cancer.....

An epidemiologic study of cancer deaths recorded in the last half of the 20th century is conducted. The number of deaths for one particular type of cancer has been decreasing in developed nations, despite the absence of widespread screening programs. Which of the following neoplasms was most likely to be identified by this study?
(A) Angiosarcoma of the liver
(B) Gastric adenocarcinoma
(C) Glioma of the brain
(D) Leukemia
(E) Lymphoma of the lymph nodes
(F) Pancreatic adenocarcinoma

Guys substantiate your answers........
Reply With Quote Quick reply to this message



  #2  
Old 06-14-2012
Hope2Pass's Avatar
USMLE Forums Master
 
Steps History: 1+CK+CS+3
Posts: 1,684
Threads: 213
Thanked 1,596 Times in 660 Posts
Reputation: 1606
Default

I'm confused between A or B but I'd go with A) Angiosarcoma of the liver.

I think its because they've stopped using Thorotrast..not sure.
Other answers seem like they are all still common ?
Reply With Quote Quick reply to this message
  #3  
Old 06-14-2012
USMLE Forums Master
 
Steps History: 1+CK+CS
Posts: 1,039
Threads: 189
Thanked 561 Times in 319 Posts
Reputation: 571
Default

Quote:
Originally Posted by anomali View Post
An epidemiologic study of cancer deaths recorded in the last half of the 20th century is conducted. The number of deaths for one particular type of cancer has been decreasing in developed nations, despite the absence of widespread screening programs. Which of the following neoplasms was most likely to be identified by this study?
(A) Angiosarcoma of the liver
(B) Gastric adenocarcinoma
(C) Glioma of the brain
(D) Leukemia
(E) Lymphoma of the lymph nodes
(F) Pancreatic adenocarcinoma

Guys substantiate your answers........
agree with Hope2Pass - A) due to decrease in exposure to vinyl/polivinyl
Reply With Quote Quick reply to this message
 
  #4  
Old 06-14-2012
USMLE Forums Master
 
Steps History: 1+CK+CS+3
Posts: 791
Threads: 76
Thanked 673 Times in 317 Posts
Reputation: 691
Default

Quote:
Originally Posted by Hope2Pass View Post
I'm confused between A or B but I'd go with A) Angiosarcoma of the liver.

I think its because they've stopped using Thorotrast..not sure.
Other answers seem like they are all still common ?
I had the same dilemma and choose A....but to my surprise it turned out to be B...

Last edited by anomali; 06-14-2012 at 10:53 AM.
Reply With Quote Quick reply to this message
  #5  
Old 06-14-2012
USMLE Forums Master
 
Steps History: 1+CK+CS+3
Posts: 791
Threads: 76
Thanked 673 Times in 317 Posts
Reputation: 691
Default

I guess this may be the explanation...


Gastric cancer was once the second most common cancer in the world. In most developed countries, however, rates of stomach cancer have declined dramatically over the past half century. In the United States, stomach malignancy is currently the 14th most common cancer.

Decreases in gastric cancer have been attributed in part to widespread use of refrigeration, which has had several beneficial effects: increased consumption of fresh fruits and vegetables; decreased intake of salt, which had been used as a food preservative; and decreased contamination of food by carcinogenic compounds arising from the decay of unrefrigerated meat products. Salt and salted foods may damage the gastric mucosa, leading to inflammation and an associated increase in DNA synthesis and cell proliferation. Other factors likely contributing to the decline in stomach cancer rates include lower rates of chronic Helicobacter pylori infection, thanks to improved sanitation and use of antibiotics, and increased screening in some countries-

http://emedicine.medscape.com/article/278744-overview
Reply With Quote Quick reply to this message



Reply

Tags
Biostatistics-Epidemiology, Step-1-Questions, US-Healthcare-

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
Epidemiology: How to calculate Incidence? mycoplasma USMLE Step 1 Forum 3 05-17-2012 11:11 AM
the incidence of HIV disease USMLE-Syndrome USMLE Step 1 Forum 2 02-08-2012 12:02 AM
Incidence and prevalence Question usmle_taker USMLE Step 1 Forum 7 12-02-2011 07:29 AM
Incidence & death rates of cancer in women umeraulakh USMLE Step 1 Forum 1 08-15-2011 11:05 AM
Non Glucose Reducing Sugars Aditya USMLE Step 1 Bits & Pieces 0 02-27-2010 12:31 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)