The Princess Margaret - Prostate Ultrasound and Biopsy Centre
Trans-rectal ultrasound allows doctors to visualize the prostate and look for abnormalities. It is performed by placing a small lubricated probe in the rectum. Sound waves emitted from the probe generate a picture of the prostate through the rectum wall.
Ultrasound of the prostate may show enlargement, irregularities, or asymmetries in the prostate. It also shows changes in tissue density which can indicate cancer.
A trans rectal ultrasound (TRUS) requires a clean rectum. Prior to the procedure, an enema must be taken. A Fleet enema can be purchased at your local drug store without a prescription. Please ask your pharmacist for any assistance.
Do not take any aspirin or arthritis medicine for 10 days prior to biopsy (although Tylenol is safe to take).
You will be asked to take antibiotics before your biopsy. A dose will be taken the night before the procedure, and another the morning of the procedure. You will continue to take these antibiotics after the procedure as well.
If you have heart valve disease or are taking anticoagulants (Coumadin, Warfarin or any blood thinning medicine) special precautions must be taken before biopsy. Please notify your doctor before coming to the test.
The biopsy will take only a few minutes, during which time you'll be asked to lie on your side with your knees curled up to your chest.
During a trans-rectal prostate biopsy procedure, a spring-loaded needle is used to take tissue samples as quickly and painlessly as possible. The needle is attached to the ultrasound probe and enters the prostate through the rectum. The needle usually takes 6-12 tissue samples from the prostate, depending on how many your doctor feels will be needed to properly diagnose you.
The tissue samples are examined under a microscope to see if they contain any cancerous cells. The results will be sent to your doctor in about 2 weeks time.
After the biopsy is complete, you will be asked to sit in a locker room for 5 minutes, and then wait one hour in the hospital to make sure that you are feeling well.