This is done when having a prostate biopsy. Sometimes to get a better picture and see the size of your prostate, you will be asked to have a Trans Rectal Ultrasound scan. This may be done by the urologist or CNS.

A small, ultrasound probe is coated with gel and gently passed into your back passage. It works by giving out sound waves. The echoes from the sound waves give a clear picture of the shape and size of your prostate which the doctor can see on a screen. You may find this a bit uncomfortable, but it shouldn’t hurt and it shouldn’t take too long. You may be asked to have a bowel movement so your back passage is empty before going for your appointment.