International journal of radiation oncology, biology, physics
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Int. J. Radiat. Oncol. Biol. Phys. · Jun 2011
Influence of prostatic edema on 131Cs permanent prostate seed implants: a dosimetric and radiobiological study.
To study the influence of prostatic edema on postimplant physical and radiobiological parameters using (131)Cs permanent prostate seed implants. ⋯ Results of the study show that QIs, FD(x), and BEDs at the level of D(x) changed from preneedle plans to postimplant plans and have statistically significant differences (p < 0.05), except for the ODI (p = 0.106), which suggests that at the time of (131)C seed implantation, the effect of edema must be accounted for when defining the seed positions, to avoid the possibility of poor dosimetric and radiobiologic results for (131)Cs seed implants.
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Int. J. Radiat. Oncol. Biol. Phys. · May 2011
Multicenter StudyTargeted intraoperative radiotherapy for breast cancer in patients in whom external beam radiation is not possible.
External beam radiation therapy (EBRT) following wide local excision of the primary tumor is the standard treatment in early breast cancer. In some circumstances this procedure is not possible or is contraindicated or difficult. The purpose of this study was to determine the safety and efficacy of targeted intraoperative radiotherapy (TARGIT) when EBRT is not feasible. ⋯ While we await the results of the randomized trial (over 2,000 patients have already been recruited), TARGIT is an acceptable option but only in highly selected cases that cannot be recruited in the trial and in whom EBRT is not feasible/possible.
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Int. J. Radiat. Oncol. Biol. Phys. · May 2011
Multicenter StudyPhase II study of oral S-1 and concurrent radiotherapy in patients with unresectable locally advanced pancreatic cancer.
S-1 is an oral fluoropyrimidine derivative that has demonstrated favorable antitumor activity in patients with metastatic pancreatic cancer. The aim of this study was to evaluate safety and efficacy of S-1 and concurrent radiotherapy in patients with unresectable locally advanced pancreatic cancer. ⋯ Oral S-1 and concurrent radiotherapy exerted a promising antitumor activity with acceptable toxicity in patients with locally advanced pancreatic cancer. This combination therapy seems to be an attractive alternative to conventional chemoradiotherapy using 5-fluorouracil infusion.
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Int. J. Radiat. Oncol. Biol. Phys. · May 2011
Accelerated partial breast irradiation: 5-year results of the German-Austrian multicenter phase II trial using interstitial multicatheter brachytherapy alone after breast-conserving surgery.
To evaluate the impact of accelerated partial breast irradiation on local control, side effects, and cosmesis using multicatheter interstitial brachytherapy as the sole method for the adjuvant local treatment of patients with low-risk breast cancer. ⋯ The long-term results of this prospective Phase II trial confirm that the efficacy of accelerated partial breast irradiation using multicatheter brachytherapy is comparable with that of whole breast irradiation and that late side effects are negligible.