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Transrectal ultrasonography
Transrectal
ultrasonography
, or
TRUS
in
short
, is a
method
of
creating
an
image of
organs
in the
pelvis
, most commonly used to
perform
an ultrasound-guided
needle biopsy
evaluation
of
the prostate
gland
in
men
with
elevated
prostate specific antigen
or
prostatic
nodules on
digital rectal exam
. TRUS--guided
biopsy
may reveal
prostate cancer
,
benign prostatic hypertrophy
, or
prostatitis
. TRUS may also
detect
other
diseases
of the lower
rectum
and can be used to stage
primary
rectal cancer
.