Dr. Gholami California Urologist




Cryotherapy for Prostate & Kidney

Prostate cancer has been treated with cryotherapy since the early 1990s. Cryotherapy is used to eradicate prostate cancer by freezing the prostate gland. After receiving anesthesia, the doctor inserts needles into the prostate gland through the perineum, the area between the scrotum and anus. The needles produce very cold temperatures. Freezing destroys the entire prostate, including any cancerous tissue within it.

 

prostate and kidney cryotherapy treatment ca
Cryotherapy uses ultra-thin needles to produce ice balls of extreme sub-zero temperatures. The doctor uses ultrasound to accurately guide insertion of the needles, precisely control the size and shape of the ice balls and monitor the freezing.

Cryotherapy Selection Criteria

Cryotherapy is an option for prostate cancer patients who want to avoid major surgery or the risks of "watchful waiting." Cryotherapy can treat prostate cancer patients in the intermediate and high risk groups (stage T2c or above) as well as those who have failed previous radiation treatment.

Effectiveness of cryotherapy

Recent publications showing 10-year data demonstrates safety and durable efficacy of cryotherapy for treating prostate cancer. Morbidity following the procedure is mild in comparison with other treatments, with the exception of sexual function impairment. Cryotherapy for prostate cancer can be repeated, and it can also be used as a secondary treatment when other primary treatments fail.

Risks of cryotherapy

The main risk associated with prostate cryotherapy is impotence. This can occur since in order to ensure the destruction of all cancer cells, the goal is to freeze tissue beyond the prostate. In doing so, the nerve bundles associated with erection that lie close to the prostate may be affected.
Cryotherapy recovery time

Cryotherapy can be performed under regional or general anesthesia on an outpatient basis, but depending on the patient's circumstances an overnight stay may be required. In most cases, the cryotherapy procedure takes less than two hours. There is minimal pain and discomfort. Patients generally are mobile the same day and can fully return to a normal routine within a few days.

Side effects of cryotherapy

In some patients, incontinence, urethral sloughing and scarring, or urethro-rectal fistula may be a side effect following cryotherapy. In most cases the symptoms are resolved in a few weeks. Other possible side effects may include:

  • Moderate pelvic pain
  • Blood in the urine
  • Mild urinary urgency
  • Scrotal swelling

These side-effects usually go away within a few weeks. Most men recover their normal bowel and bladder function.

Cryoablation therapy offers:

  • a minimally invasive procedure
  • favorable success rate and complication rates
  • a short recuperation period
  • procedure can be repeated if the first cryoablation has failed
  • radiation therapy or radical prostatectomy is still an option if the procedure fails
  • less than half the cost of the traditional treatment

The disadvantages are:

  • men will have a suprapubic urinary catheter for 2-3 weeks after the procedure, similar to prostate surgery
  • most patients treated with cryosurgery on both sides of the prostate will have impotence initially after the procedure, but it can be treated and may improve over time
Cryoablation is a treatment for prostate cancer that uses small probes, called cryoprobes, inserted into the prostate gland in order to destroy the prostate cancer. The probes are placed precisely into the prostate using ultrasound guidance, and temperature sensors placed into and around the prostate are used to be certain that proper freezing of the tissue is obtained. The entire prostate is frozen to -40°C, while the urethra is protected by a special warming catheter. The procedure is performed under spinal anesthesia, so the patient has no pain during the procedure.
cryotherapy treatment san jose ca

Who are the best candidates for cryoablation of the prostate?

Suitable candidates for this procedure are patients who have organ-confined prostate cancer or those who have minimal spreading beyond the prostate.

How Is The Procedure Performed?

Prostate cryotherapy is performed with the patient under general or spinal anesthesia. A prostate ultrasound probe is placed in the rectum and the prostate measured. Under continuous monitoring with ultrasound imaging, cryoablation probes are placed at predetermined sites within the prostate. Temperature sensors are placed at each neurovascular bundle and at several other points to accurately measure prostate temperatures.
prostate cryotherapy ultasound san jose ca

A urethral warming catheter is placed to protect the urethra from being injured during the freezing. The freezing starts at the front part of the prostate by activating the front probes, followed by the middle and finally the back probes. The exact extent of the iceball is visualized clearly on ultrasound, so that the urologist freezing to extend to the limits of the prostate without injuring the rectum. Two freezing cycles are usually done, and the prostate is allowed to thaw either passively or actively between the freezing cycles. A suprapubic catheter (a small catheter that is pierced into the bladder through a small opening in the lower abdomen) is inserted and secured in place.


In most cases of cryosurgery the entire prostate is frozen, but two new variations of cryosurgery are possible for patients with smaller amount of cancer. Nerve-sparing cryosurgery uses a warming device to preserve the nerve that causes erections on the side of the prostate opposite the cancer. Both sides of the prostate are frozen, but one of the nerves is spared, which increases the chance that a man can preserve sexual function. Men with slow-growing cancer confined to one side of the prostate can be treated on one side only, a procedure called focal cryosurgery. This also may lower the risk of impotence after the procedure. Extensive biopsies of the prostate are required prior to one of the limited types of cryosurgery, so that you doctor can be certain that he knows exactly how much cancer is present in the prostate.
cryotherapy prostate treatment image san jose ca

What can be expected after treatment?

The patient is usually sent home the day of the procedure. The patient is sent home with a catheter above the pubic bone for drainage of the bladder.

Patients usually leave the tube to drainage for the first week after the procedure, and then start to try to urinate when they feel the urge. Most patients are able to urinate in about 7 to 10 days but some may require longer recovery periods. When the patient is able to urinate well and empty the bladder satisfactorily, the suprapubic catheter is removed. Oral antibiotics are usually given for 10 to 14 days. Other symptoms and signs the patient may experience are generalized fatigue that usually persists for seven to 10 days, urethral discharge, scrotal swelling, numbness at the tip of the penis, passage of flecks of tissue, pain or burning sensation during urination and increased urinary frequency and/or urgency.

A PSA test is usually done at three months. Also, a prostate biopsy may be done at three to six months to assess for prostate destruction and absence of viable cancer cells, especially if PSA level is detectable. If the biopsy proves negative, PSA measurements are obtained every 3 months for one to two years, then every six months for the next one to three years and every year thereafter.

What is the chance for cancer cure with cryosurgery?

There are over 400 published studies that document the clinical value of cryoablation as a treatment of prostate cancer. Recent studies show 10 year cure rates as high as 90% for low risk patients, which is the same as the results of surgery or radiation treatments. Patients found to have persistant cancer in the prostate after cryosurgery can undergo repeat treatment, or can have surgery to remove the prostate or radiation treatments. Cryotherapy does not preclude the patient from other therapeautic strategies in the future.

What are the risks associated with this procedure?

Fistula: New technological advances have resulted in a significant reduction of the rate of complications. Improved urethral warming devices have minimized urethral complications. Better spacing of the probes now contributes to the effectiveness and safety of the procedure. Improved monitoring of the freezing with transrectal ultrasound is also helpful. However, some risks still exist. Perhaps one of the most critical is the risk of urinary rectal fistula, which creates a channel between the prostate or the bladder and the rectum and may cause diarrhea due to urine in the rectum and possibly severe infection due to bacteria in the bladder. With modern cryosurgery techniques the risk of fistula is less than 1%, but older studies found fistula in 5-10% of cases.

Impotence: There is a high incidence of erectile dysfunction with all of the prostate cancer treatments. Almost all patients who undergo cryosurgery to both sides of the prostate will have impotence immediately after the procedure. The impotence can be treated, and many patients will recover erections after one year. We believe that a program to help recovery of erections can significantly improve the chances that a man will recover good sexual function. This program may involve the use of a vaccum erection device or medications to cause erections for the first year after treatment. If nerve-sparing cryosurgery is performed, or if only one side of the prostate is treated (focal cryosurgery) the risk of impotence is less.

Incontinence: Permanent, severe incontinence is rare (approximately 1 percent), but 2-3% of patients will have a small amount of urine leakage that may require them to wear a pad in their underwear.

Others: Other complications, although uncommon given technological advances, include urinary retention requiring transurethral resection of the prostate (TURP), inflammation of the testicle, prostatic abscess and permanent penile numbness. Almost all patients have a temporary need for a catheter to empty the bladder for an average of 15 days.

What is focal cryosurgery?

Focal cryosurgery is a procedure in which only the area of the prostate that contains cancer is frozen. Some doctors are calling this procedure the "Male Lumpectomy" because only the cancer containing area of the prostate is treated, similar to the way that small breast cancers are treated in women. This results in less side effects, and less risk of impotence, than standard cryosurgery. Not all patients are good candidates for focal cryosurgery. The best candidates will have a small amount of Gleason 6 cancer in one or two biopsies from a single side of the prostate. Extensive biopsies of the prostate are performed under anesthesia several weeks prior to the procedure to map out the areas containing cancer and to be sure that more cancer is not present. The main advantage of focal cryosurgery is a minimal risk of impotence in men with normal sexual function. This type of therapy is not intended to completely treat the entire prostate gland and has a risk of recurrence of cancer. Focal therapy can be repeated.

Is cryoablation therapy used after other prostate cancer treatments have failed?

Yes. An important use of cryoablation therapy is for patients who fail or develop recurrence after radiation therapy.

Contact Dr. Gholami at 408-358-2030 or via online below:

Click here to request an appointment online >>