Prep for USMLEPrep for USMLE Forum
   Forum    Step 1  Step 2 CK Step 2 CS Step 3  Match  IMGs Resources Search






Previous Topic | Next Topic  lung CA risk 




 
Kaplan Qbank USMLE



Author6 Posts
  #1

A 55 yr old male with persistent cough, CXR shows a coin lesion. whats the chance of it being malignant?

a) 30%
b) 50%
c) 80%
d) 100%

  #2

Does he smoke ...how big is the coin lesion?

  #3

ans is80%

  #4

Yes the answer is 80% if the patient smokes and it gets even higher the more and longer he or she smokes but for a non smoker with a coin lesion below 2 cm then the risk is only 50 %.

A 2 cm lesion is called a solitary pulmonary nodule...what is the 3 cm lesion called?

  #5

bikram u r right

this is a big coin lesion >6 cm, n the risk is 80% without smoking. if he smokes, the risk is even higher

  #6

yes it is just that u didn't mention how big it is....6 cm is humongous......hehe
I guess it had to be cancer.....
But i am sure that an incidetal solitary pulmonary nodule that means less than 2.5 cm has an approximate 50% chance of being malignant in patients >60 years of age ...
then u bring up other criteria....
shape, site, calcification ...etc... to raise or lower the percentage....







You don't have permission to post.




Login or Register to post messages in this topic





















Contact | Leaders | Disclaimer | Privacy

Copyright @ Prep for USMLE. All rights reserved.