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  • Title: Strontium-89 therapy for the pain of osseous metastases.
    Author: Silberstein EB, Williams C.
    Journal: J Nucl Med; 1985 Apr; 26(4):345-8. PubMed ID: 3920361.
    Abstract:
    A Phase I and II study has been conducted of the safety and efficacy of 89Sr (injected i.v. as the chloride) to alleviate bone pain due to osseous metastatic disease. Potential attendant hematologic toxicity was also examined. Strontium-90 impurities were always less than 1.5%, employing a new quality control technique which detects the 90Y "daughter". Thirty-eight patients with pain due to osseous metastases requiring regular narcotic more than twice a day, documented by an abnormal bone scan and radiography, received 45 doses (1-4.5 mCi, 16-70 microCi/kg) of 89Sr after informed consent. The performance status (Karnofsky scale) ranged from 20-80%. One patient had complete pain relief while 22 other doses yielded at least a 25% reduction in narcotic requirement lasting at least 1 mo and/or 20% improvement in Karnofsky scale rating. Two patients had marked to complete relief in tumor sites which were not fractured, with no change in fracture pain. Twenty-two did not respond. Response was independent of narcotic requirements, tumor type, or Karnofsky status. No hematologic toxicity occurred. Strontium-89 may be useful as adjuvant therapy for diffuse bone pain, but a double-blind study comparing it to other nonnarcotic modalities is required.
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