Google says :Brachytherapy is a form of radiation therapy used to treat various cancers. Treatment involves surgically placing radioactive seeds, capsules or other implants directly in or near the cancerous tumor. The implants give off radiation for a short time.
Using an implant allows a higher dose of radiation in a limited area than might be possible with conventional radiation treatments that are delivered externally. This can be more effective at destroying the cancer cells while minimizing damage to surrounding normal tissue.
About 100 seeds are commonly implanted. The implants remain in place permanently, and become biologically inert (inactive) after about 10 months.
Brachytherapy increases the 9-year success rate from 62 percent to 83 percent for those with intermediate to high-risk cancer. The overall outlook for people with prostate cancer, regardless of treatment plan, is excellent.
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