PMID: 7543606Sep 1, 1995Paper

Prostate specific antigen based disease control following ultrasound guided 125iodine implantation for stage T1/T2 prostatic carcinoma

The Journal of Urology
J C BlaskoH Ragde

Abstract

We report the prostate specific antigen (PSA) based recurrence-free survival rate after 125iodine (125I) implantation for early stage prostatic carcinoma. A total of 197 patients with clinical stage T1 and T2 prostatic carcinoma underwent outpatient 125I seed implantation. Followup was 1 to 7 years (median 3). Pretreatment serum PSA levels were elevated (greater than 4.0 ng./ml.) in 138 patients (70%). There were 105 well differentiated (Gleason score 2 to 4), 87 moderately differentiated (Gleason score 5 to 6) and 5 indeterminate tumors. The prescribed minimum prostatic dose was 160 Gy. The total dosage of 125I implanted ranged from 15 to 62 mCi. (median 37). Staging lymph node dissection and seminal vesicle biopsies were not routinely performed. Among 138 patients with an elevated PSA level before implantation and no prior hormonal treatment, the PSA value returned to normal in 98% and decreased to less than 1.0 ng./ml. in 82% within 24 months of treatment. In 97% of those 138 patients the PSA level decreased to less than 1.0 ng./ml. at 48 months after implantation. Of 8 patients with an increasing PSA value 5 also had clinically evident failure. The actuarial rate of chemical (increasing PSA) or clinical failure at 5 years f...Continue Reading

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