radical prostatectomy
article written by Dr. Lester Goetz
Surgery Overview
Radical prostatectomy removes the entire prostate gland and some of the
tissue around it. It is done to remove prostate cancer. Radical prostatectomy
may be done by open or laparoscopic surgery.
Open Surgery
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Retropubic approach: The prostate gland is removed through an
incision in the lower abdomen. Recovery time after this surgery
may be longer than after perineal surgery. The pelvic lymph
nodes may be removed and examined at the time of surgery
(pelvic lymph node dissection). Retropubic prostatectomy is
the most widely performed treatment for prostate cancer.
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Perineal approach: The prostate gland is removed through an
incision between the rectum and base of the penis. The
recovery time after this surgery may be shorter. Examination
of the pelvic lymph nodes must be done in a separate surgery.
In some cases, when the lymph nodes are believed to be free
of cancer based on the grade of the cancer and results of
the PSA test, the lymph nodes may not be sampled.
Laparoscopic Surgery
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Laparoscopic radical prostatectomy sometimes is used as an alternative to
conventional (open) prostatectomy. It involves inserting a lighted viewing
instrument (laparoscope) into the pelvic region and allows examination and
removal of the prostate without a large abdominal incision. This
technique may reduce complications during and after surgery. Laparoscopic
prostatectomy is not yet widely available, and because it is a
relatively new technique, no results from long-term follow-up
after treatment are available.
Each type of surgery may be done as a nerve-sparing or
non-nerve-sparing type of procedure.
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Nerve-sparing procedures are used to avoid damaging
nerves that run alongside the prostate and control
erection.
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Non-nerve-sparing procedures remove the entire
prostate, the tissue surrounding it, and the nerves
needed to get an erection.
Nerve Sparing Procedure
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This operation offers patients with localized
prostate cancer a potential cure;
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The indications for surgery remain the same
as for Brachytherapy;
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The cure rate of 75% in ten years is noted in patients with a
Gleason's Grade of 3 + 3 = 6 or less and a PSA of 10 or less
and cancer localized to one lobe of the prostate;
An incision is made in the lower abdomen below the umbilicus and the
nerves for erection are moved away from the prostate prior to removal
of the prostate. Then the bladder exit is joined to the urethra so
that the patient can pass urine normally.
After surgery, the patient may get mild to moderate stress incontinence
i.e. there is some leakage of urine in coughing, sneezing or on
standing up from a sitting position. A pad may be necessary for
absorption of the urine. However, this usually resolves completely
with exercises, anticholinergenics and time.
Patients may experience erectile dysfunction initially. This resolves
in most cases and more so in younger men i.e. in their 50’s. However,
tablets and injections can assist in obtaining a full erection.
There is no ejaculate after surgery since the prostate is removed and
so one cannot father a child after surgery. Blood loss is usually well
controlled and patients can donate their own blood if they wish.
The advantages of Radical Nerve Sparing Prostatectomy are that patients
with a poor urinary flow or unable to pass urine (retention) get a very
good relief with this operation. Patients with prostates greater than
60 cc choose this option.
The prostate specific antigen (PSA) drops to 0-2 ng/ml or less within
2 weeks of surgery. The prostate is sent to histology testing which
gives an accurate grade and an idea of the extent and possible invasion
of the capsule.