Cryotherapy

What is Cryotherapy?

Cryotherapy, Cryosurgery, or Targeted Cryo-ablation of the Prostate (TCAP) involves inserting, under ultrasound guidance, a number of probes into the prostate gland. Argon gas is passed down these probes under pressure and, at the tips, it is allowed to expand and flow back down other channels of the probes. Ice balls are formed which destroy the tissues and the tumour in close proximity to the tips. By suitable positioning of these probes, either the tumour itself or the whole prostate gland can be treated. The process also involves the use of a second gas (helium) to thaw the area; two (or sometimes more) freeze/thaw cycles may be used.

Who is it for and what is involved?

Cryotherapy is normally considered by many urologists only as an option when radiotherapy has failed but cancer is still found in the prostate. However, it can be offered as a primary treatment. As well as targeting the whole prostate, it can now treat small areas identified on a special mpMRI scan. Cryotherapy is not suitable for those with an over-enlarged prostate. The patient will normally be discharged from hospital within 24 hours after treatment but with a catheter in place. PSA levels should gradually drop to an acceptable level after treatment.

Focal Cryotherapy

The development of refined MRI and biopsy techniques has made it possible to target small areas of cancer within the prostate. This minimises side effects and can be more easily repeated.

Ice balls forming in the prostate after insertion of the needles

 

     Advantages and disadvantages

    • It is a relatively non-invasive technique with minimal blood loss
    • There is a short recovery time and the operation can be repeated if it is not totally successful

      But:

    • Side effects can include soreness of the perineum, some incontinence and a high rate of erectile and ejaculatory dysfunction

Note: There is no long-term data on the effectiveness of this treatment. It is only available at a few centres in the UK and is only obtainable on the NHS in the context of a clinical trial.