International journal of radiation oncology, biology, physics
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Int. J. Radiat. Oncol. Biol. Phys. · Jun 2010
Randomized Controlled TrialPredicting the effect of accelerated fractionation in postoperative radiotherapy for head and neck cancer based on molecular marker profiles: data from a randomized clinical trial.
To determine the prognostic and predictive values of molecular marker expression profiles based on data from a randomized clinical trial of postoperative conventional fractionation (p-CF) therapy versus 7-day-per-week postoperative continuous accelerated irradiation (p-CAIR) therapy for squamous cell cancer of the head and neck. ⋯ These results support the studies that demonstrate the potential of molecular profiles to predict the benefit from accelerated radiotherapy. The molecular profile that favored accelerated treatment (low Ki-67, low p-53, and high EGFR expression) was in a good accordance with results provided by other investigators. Combining individual predictors in a joint score may improve their predictive potential.
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Int. J. Radiat. Oncol. Biol. Phys. · Jun 2010
Radiotherapy can decrease locoregional recurrence and increase survival in mastectomy patients with T1 to T2 breast cancer and one to three positive nodes with negative estrogen receptor and positive lymphovascular invasion status.
To define a subgroup of patients at high risk of locoregional recurrence (LRR) who might be benefit from postmastectomy radiotherapy in invasive breast cancer and tumor size <5 cm with one to three involved axillary lymph nodes (T1-2 N1). ⋯ Radiotherapy can reduce LRR and increase survival in T1-2 N1 breast cancer patients with negative ER status and presence of LVI.
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Int. J. Radiat. Oncol. Biol. Phys. · Jun 2010
Clinical application of high-dose, image-guided intensity-modulated radiotherapy in high-risk prostate cancer.
To report the feasibility and early toxicity of dose-escalated image-guided IMRT to the pelvic lymph nodes (LN), prostate (P), and seminal vesicles (SV). ⋯ These results suggest that dose escalation to the PLN+P+SV using IMRT is feasible, with acceptable rates of acute toxicity.
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Int. J. Radiat. Oncol. Biol. Phys. · Jun 2010
Comparative StudyIntensity-modulated proton therapy reduces the dose to normal tissue compared with intensity-modulated radiation therapy or passive scattering proton therapy and enables individualized radical radiotherapy for extensive stage IIIB non-small-cell lung cancer: a virtual clinical study.
To compare dose volume histograms of intensity-modulated proton therapy (IMPT) with those of intensity-modulated radiation therapy (IMRT) and passive scattering proton therapy (PSPT) for the treatment of stage IIIB non-small-cell lung cancer (NSCLC) and to explore the possibility of individualized radical radiotherapy. ⋯ IMPT reduces the dose to normal tissue and allows individualized radical radiotherapy for extensive stage IIIB NSCLC.
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Int. J. Radiat. Oncol. Biol. Phys. · Jun 2010
Comparative StudyComparison of methods to reduce dose to swallowing-related structures in head and neck cancer.
Emerging data suggest that reduction of dose to the larynx and pharyngeal constrictor may lower the risk of swallowing complications such as long-term gastrostomy dependence and aspiration. Organ avoidance becomes difficult when the primary tumor or involved nodes are present at the level of the larynx. ⋯ Given the steep dose responses seen in studies examining the association between swallowing toxicity and dose to the larynx and IPC, dose reductions using the D-SCLV technique may be clinically significant.