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"In high-risk breast cancer, concurrent administration of both chemotherapy and radiotherapy is feasible using selected drugs that may not have cumulative toxic effects with RT. Such a scheme may have the advantage of providing synergistic effect on tumor response and shortening the delay in the start of RT with survival benefits. In 1996, our French randomized multicenter phase III trial (ARCOSEIN) was thus initiated to compare the effect on disease-free survival of concurrent vs. sequential 5-Fluorouracil, novantrone, cyclophosphamide (FNC) chemotherapy and radiotherapy after breast-conserving surgery for stage I-II breast cancer. The current analysis of this trial, with a median follow-up time of 5 years, showed no statistically significant difference in the rates of freedom from any event, freedom from distant metastasis, or overall survival between sequential and concurrent radiochemotherapy after breast-conserving surgery for stage I - II breast cancer.However, there was a higher risk of local recurrence in node-positive women treated with chemotherapy first and radiotherapy.Two other randomized trials directly compared sequential and concomitant chemoradiotherapy programs. A study by a consortium of French national cancer centers and an Italian study, Arcangeli et al., recently reported a randomized trial comparing sequential and concurrent CMF regimen with radiotherapy in a 206 patients-study with 5 years follow-up. They concluded that concurrent administration of CMF chemotherapy and radiotherapy was safe and might be reserved for patients at high risk of local recurrence, such as those with positive surgical margins or larger tumor diameters. In our randomised study, we find an advantage in DFS not to delay irradiation for node positive breast cancer, with a no standard concurrent chemotherapy regimen well tolerated. These benefits have come at the expense of increase grade 2 or greater late toxicity,  without need for significant interruptions or dose reductions (...)" . (Comment on paper: Toledano A et al.: "Phase III trial of concurrent or sequential adjuvant chemoradiotherapy after conservative surgery for early-stage breast cancer: final results of the ARCOSEIN trial", J Clin Oncol. 2007 Feb 1;25(4):405-10)

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"Studies that assess the risks associated with opioid use at the end of life are limited.  To determine whether survival after last opioid dose change is associated with opioid dosing characteristics and other factors, a cohort study of 1306 patients treated at 13 U.S. hospices was conducted.  In total, 725 patients received opioids and underwent at least one dose change before death.  Multivariate analyses examined associations between survival after final dose change and other variables, including dose in morphine equivalent mg and percentage dose increase. The mean + SD number of days between final dose change and death was 12.46 + 23.11.  Multivariate models demonstrated a significant association between shorter survival and higher opioid dose, a cancer diagnosis, unresponsiveness, and pain of <5 on a 0-10 scale, but none of these models explained >10% of the variance in time till death.  These data suggest that opioid treatment can explain little of the variation in the time until death among a population of hospice patients.  In this population, survival is influenced by complex factors, many of which may not be measurable.  Concern about hastening death does not justify withholding opioid therapy" (Comment on paper: Portenoy R et al.: "Opioid use and survival at the end of life: a survey of a hospice population", J Pain Symptom Manage.32(6):532-40)

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