What is the advantage of internal brachytherapy vs external radiation for prostate cancer? seems as if everyone would prefer the external route.

Brachytheraphy best: Good question and there will be a many opinions. Well performed brachytheraphy places the radiation dose inside the prostate emitting it's dose outward to just beyond the edge of prostatic tissue. In low gleason score low volume disease this should be as effective as surgical removal. Need to assess voiding ability before the procedure. With ebrt surrounding tissues receive more radiation.

Convenience: Historically, there used to be greater advantages. There are many fewer advantages today, since external beam radiation has advanced greatly. You can save time by having brachytherapy. The advantages used to be greater. Cyberknife treatment offers all the benefits of both: only five days, and none of the bruising pain and bleeding of seed placement. Good luck with your choice.