NEW YORK (Reuters Health) — An analysis of men with early prostate cancer treated at the Cleveland Clinic found that those treated with external beam radiation therapy had poorer overall survival than those treated with radioactive seed implants (brachytherapy) or by surgical removal of the prostate (radical prostatectomy).“These findings indicate that the three major forms of treatment for early-stage prostate cancer are not necessarily equivalent in terms of overall survival,” said Dr. Jay Ciezki of the Cleveland Clinic in a statement.

He reported the results on Saturday in Orlando at the Prostate Cancer Symposium.

From 1996 to 2003, over 2000 men with low- or intermediate-risk prostate cancer were treated at the Cleveland Clinic and have been followed for an average of 59 months. The overall survival rate five years after treatment was 93.8 percent for men treated with external beam radiotherapy, compared with 95.7 percent for men treated with brachytherapy and 97.7 percent for those treated with surgery.