A procedure in which a probe
that sends out high-energy sound waves is inserted into the rectum. The
sound waves are bounced off internal tissues or organs and make echoes. The
echoes form a picture of body tissue called a sonogram. ERUS is used to
look for abnormalities in the rectum and nearby structures, including the
prostate. Also called endorectal ultrasound, transrectal ultrasound, and TRUS.
 of the prostate.','popup','width=780,height=630,scrollbars=1,resizable=1,menubar=0,location=0,status=0,toolbar=0'))
