What are the types of radiotherapy for the treatment of prostate cancer?

Updated: Dec 30, 2020
  • Author: Kenneth A Iczkowski, MD; Chief Editor: Liang Cheng, MD  more...
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Answer

Answer

About one quarter of men with prostate cancer choose radiotherapy. [1] Prostate radiotherapy can be delivered by brachytherapy or external beam therapy. In external beam therapy, a beam delivers radiation to the whole pelvis, with a boost to the prostate.

In brachytherapy, interstitial radiation is delivered by implanted seeds containing a radioisotope (iodine-131 (131 I), iridium-192 [192 Ir], or gold-198 [198 Au]).

Serum prostate-specific antigen (PSA) and a rectal examination may suggest whether or not radiotherapy has eradicated the entire prostate tumor. [2]


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