Under adequate local anesthesia, the size of the transrectal ultrasound probe made no difference to pain perception during transrectal ultrasound guided prostate biopsy, according to a PubMed report.

A transrectal ultrasound (TRUS) of the prostate may also be called a prostate sonogram or endorectal ultrasound. A doctor usually performs a TRUS to help diagnose prostate cancer or detect prostate ...