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Retrospective chart review reports dose-dependent survival and complication rates in prostate carcinoma, indicating increased bowel and urinary toxicities with higher radiation doses.
The charts of 96 patients who received radiotherapy at The M. S. Hershey Medical Center for their prostatic carcinoma were reviewed. The 4-year NED (no evidence of disease) survival rates for patients receiving between 6,500 and 7,000 rad of external beam radiation (EBR) were 92, 78, 56, and 50% for stages A, B, C, and D1, respectively. The 4-year NED survival rate for stage B patients was 90% for those receiving approximately 6,500 rad of EBR, 75% for those receiving approximately 7,000 rad of EBR, and 71% for those receiving interstitial implants. Bowel or urinary complications occurred in 27% (21% grade I, 3% grade II, and 3% grade III) of those receiving approximately 6,500 rad of EBR, 40% (25% grade I, 10% grade II, and 5% grade III) of those receiving 7,000 rad of EBR, and 0% of those receiving interstitial implants. The effects of stage, grade, and treatment type on NED survival and complications are discussed.
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Leonard et al. (1986) studied this question.
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