What ' s known on the subject? and What does the study add? Despite the increased popularity of emerging therapies for localised prostate cancer, such as cryotherapy and brachytherapy, outcomes data remains sparse beyond single-centre comparative studies.The present study identifi ed that although less costly, cryotherapy was associated with more urinary and ED complications and a greater need for salvage ADT. Conversely, cryotherapy was associated with fewer bowel complications. Patients and providers alike should consider these population-based outcomes when discussing therapeutic options for localised prostate cancer.
OBJECTIVE• To compare prostate cryotherapy vs brachytherapy outcomes and costs, as despite the greater popularity of these emerging therapies for localised prostate cancer, outcomes data remains sparse beyond single-centre comparative studies.
PATIENTS AND METHODS• Observational study of 10 928 men who underwent primary cryotherapy (943 patients) or brachytherapy (9985) with ≥ 2 years of follow-up using USA Surveillance, Epidemiology, and End Results (SEER-) Medicare linked data.• Weighted propensity score methods were used.
RESULTS• Use of cryotherapy increased four-fold whereas brachytherapy utilization remained the same from 2001 to 2005 ( P < 0.001). Men who underwent cryotherapy vs brachytherapy were older ( P < 0.001), more likely to be Black ( P < 0.001), less likely to live in areas of higher education ( P < 0.001), less likely to live in areas with greater income ( P < 0.001), and were more likely to live in urban vs rural areas ( P = 0.007).• In propensity score-weighted analyses, cryotherapy was associated with more urinary (41.4% vs 22.2%, P < 0.001) and erectile dysfunction (ED) complications (34.7% vs 21.0%, P < 0.001) while brachytherapy was associated with more bowel complications (19.0% vs 12.1%, P < 0.001).• Cryotherapy was associated with greater use of salvage androgen deprivation therapy (ADT; 1.4 vs 0.5 per 100 personyears, P < 0.001), suggesting worse cancer control.• Finally costs were signifi cantly greater for brachytherapy vs cryotherapy ($16 887 vs $12 629 USA dollars, P < 0.001).
CONCLUSIONS• Although less costly, cryotherapy was associated with more urinary and ED complications and greater need for salvage ADT.• Conversely, cryotherapy was associated with fewer bowel complications. Patients and providers alike should consider these population-based outcomes when discussing therapeutic options for localised prostate cancer.
With the use of ionizing radiation comes the risk of accidents and malevolent misuse. When unplanned exposures occur, there are several methods which can be used to retrospectively reconstruct individual radiation exposures; biological methods include analysis of aberrations and damage of chromosomes and DNA, while physical methods rely on luminescence (TL/OSL) or EPR signals. To ensure the quality and dependability of these methods, they should be evaluated under realistic exposure conditions. In 2019, EURADOS Working Group 10 and RENEB organized a field test with the purpose of evaluating retrospective dosimetry methods as carried out in potential real-life exposure scenarios. A 1.36 TBq 192 Ir source was used to irradiate anthropomorphic phantoms in different geometries at doses of several Gy in an outdoor open-air geometry. Materials intended for accident dosimetry (including mobile phones and blood) were placed on the phantoms together with reference dosimeters (LiF, NaCl, glass). The objective was to estimate radiation exposures received by individuals as measured using blood and fortuitous materials, and to evaluate these methods by comparing the estimated doses to reference measurements and Monte Carlo simulations. Herein we describe the overall planning, goals, execution and preliminary outcomes of the 2019 field test. Such field tests are essential for the development of new and existing methods. The outputs from this field test include useful experience in terms of planning and execution of future exercises, with respect to time management, radiation protection, and reference dosimetry to be considered to obtain relevant data for analysis.
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