Breast conservative therapy preliminaryreport with HDR afterloading lridium- 192 implants
Sun Shiliang,et al Chongqing Cancer Hospital
Conservative breast cancer therapy is a rapidly developing technique. It is as efficacious as radical mastectomy. In March 1990,we started using the HDR afterloading technique for iridum -192 implants in combination with surgery and external beam radiation. 20 patients with Tl to T3 tumor,after tumor local excision and radical axilary dissection,received an external dose of 45 ?50 Gy to the whole breast using mega-voltage X-rays or Co -60 gamma ray in conventional fraction. An additional dose of 20 Gy to the tumor bed was delivered by interstitial irradiation with HDR iridium?92 afterloading unit according to the paris system . preliminary results were satisfactory. The patients felt well themselves, puncture biopsies to tumor bed were performed 3 months,after the therapy and no cancer cells could be found,
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