Washington University School of Medicine
The purpose of this research study is to learn more about the outcomes and early and late side effects of treating early stage prostate cancer with high dose rate brachytherapy.
Inclusion Criteria: * Histologically or cytologically confirmed diagnosis of early stage prostate cancer. * Must be considered either low-risk (T1-T2a, Gleason ≤ 6, PSA \< 10 ng/mL) or favorable intermediate-risk (Gleason 3 +4 = 7, percentage of positive biopsy cores \< 50%, no more than one NCCN intermediate risk factor). * Prior androgen deprivation therapy is allowed and may have been initiated up to 6 months prior to the date of the HDR implant. The complete duration of androgen deprivation therapy can range from 4 months to 36 months provided it has been initiated no more than 6 months p…
* Dose constraints for 21 Gy: * Bladder and rectum: V70 \< 1 cc * Urethra: V115 \< 1 cc * V135: 0% * Dose constraints for 23 Gy: * Bladder and rectum: V65 \< 1 cc * Urethra: V105 \< 1 cc * V125: 0% * Dose constraints for 25 Gy: * Prostate V100 \>90% (\>95% preferred) * Bladder and rectum: V70 \< 1 cc, Dmax \<115% * Urethra: V110 \< 1 cc, Dmax \<120%
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