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https://www.readbyqxmd.com/read/28916284/stereotactic-body-radiotherapy-versus-low-dose-rate-brachytherapy-for-localised-prostate-cancer-a-cost-utility-analysis
#1
J Helou, S Torres, H B Musunuru, J Raphael, P Cheung, D Vesprini, H T Chung, L D'Alimonte, M Krahn, G Morton, A Loblaw
AIMS: To conduct a cost-utility analysis comparing stereotactic body radiotherapy (SBRT) with low dose rate brachytherapy (LDR-BT) for localised prostate cancer (PCa). MATERIALS AND METHODS: A decision-analytic Markov model was developed from the healthcare payer perspective to simulate the history of a 66-year-old man with low-risk PCa. The model followed patients yearly over their remaining lifetimes. Health states included 'recurrence-free', 'biochemical recurrence' (BR), 'metastatic' and 'death'...
September 12, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28905446/impact-of-five-tiered-gleason-grade-groups-on-prognostic-prediction-in-clinical-stage-t3-prostate-cancer-undergoing-high-dose-rate-brachytherapy
#2
Hideyasu Tsumura, Hiromichi Ishiyama, Ken-Ichi Tabata, Hiroki Katsumata, Momoko Kobayashi, Masaomi Ikeda, Shinji Kurosaka, Tetsuo Fujita, Masashi Kitano, Takefumi Satoh, Nobuyuki Yanagisawa, Kazushige Hayakawa, Masatsugu Iwamura
BACKGROUND: We evaluated a five-tiered Gleason grade groups arising from the 2014 International Society of Urological Pathology consensus conference on prognostic prediction in clinical stage T3a (extracapsular invasion) and T3b (seminal vesicle involvement) prostate cancer undergoing high-dose-rate brachytherapy (HDR-BT). METHODS: From November 2003 to December 2012, 283 patients with stage T3 prostate cancer received HDR-BT and external beam radiation therapy (EBRT) with long-term androgen deprivation therapy (ADT)...
September 14, 2017: Prostate
https://www.readbyqxmd.com/read/28890088/management-of-local-relapse-after-prostate-cancer-radiotherapy-surgery-or-radiotherapy
#3
C Hennequin, J-M Hannoun-Lévi, F Rozet
Isolated local relapse after prostate cancer radiotherapy corresponds to 40% of biochemical failure. The management of these relapses is not well defined. Several strategies are available including surgery, high-intensity focused ultrasounds (HIFU), cryotherapy and reirradiation. Radical prostatectomy is the historical approach; biochemical control is obtained in 50 to 80% at 5 year. However, morbidity is higher after irradiation than as a first line treatment. Some limited series of HIFU and cryotherapy have been published with interesting results, but again the risk of urinary and rectal toxicity is high...
September 7, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/28890087/-therapeutic-innovations-in-radiation-oncology-for-localized-prostate-cancer
#4
G Créhange, L Cormier
Intensity-modulated radiation therapy, image-guided radiation therapy with fiducial markers and prostate brachytherapy allow the delivery of dose escalation for localized prostate cancer with very low rates of long-term toxicity and sequelae. Nowadays, modern radiotherapy techniques make it possible to shorten treatment time with hypofractionation, to better protect surrounding healthy tissues and to escalate the dose even further. Advances in radiotherapy are closely linked to advances in magnetic resonance imaging (MRI) and/or PET imaging...
September 7, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/28888417/american-brachytherapy-society-recurrent-carcinoma-of-the-endometrium-task-force-patterns-of-care-and-review-of-the-literature
#5
Mitchell Kamrava, Sushil Beriwal, Beth Erickson, David Gaffney, Anuja Jhingran, Ann Klopp, Sang June Park, Akila Viswanathan, Catheryn Yashar, Lilie Lin
PURPOSE: The purpose of this American Brachytherapy Society task force is to present a literature review and patterns of care by a panel of experts for the management of vaginal recurrence of endometrial cancer. METHODS AND MATERIALS: In 2016, the American Brachytherapy Society Board selected a panel of experts in gynecologic brachytherapy to update our current state of knowledge for managing vaginal recurrence of endometrial cancer. Practice patterns were evaluated via an online survey and clinical updates occurred through a combination of literature review and clinical experience and/or expertise...
September 6, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28873026/impact-of-ionizing-radiation-on-the-cardiovascular-system-a-review
#6
Stephanie Puukila, Jennifer A Lemon, Simon J Lees, T C Tai, Douglas R Boreham, Neelam Khaper
Radiation therapy has become one of the main forms of treatment for various types of cancers. Cancer patients previously treated with high doses of radiation are at a greater risk to develop cardiovascular complications later in life. The heart can receive varying doses of radiation depending on the type of therapy and can even reach doses in the range of 17 Gy. Multiple studies have highlighted the role of oxidative stress and inflammation in radiation-induced cardiovascular damage. Doses of ionizing radiation below 200 mGy, however, have been shown to have beneficial effects in some experimental models of radiation-induced damage, but low-dose effects in the heart is still debated...
September 5, 2017: Radiation Research
https://www.readbyqxmd.com/read/28865463/carbon-ion-radiotherapy-for-non-small-cell-lung-cancer-with-interstitial-lung-disease-a%C3%A2-retrospective-analysis
#7
Mio Nakajima, Naoyoshi Yamamoto, Kazuhiko Hayashi, Masataka Karube, Daniel K Ebner, Wataru Takahashi, Makoto Anzai, Kenji Tsushima, Yuji Tada, Koichiro Tatsumi, Tadaaiki Miyamoto, Hiroshi Tsuji, Takehiko Fujisawa, Tadashi Kamada
BACKGROUND: Lung cancer is frequently complicated by interstitial lung disease (ILD). Treatment protocols for lung cancer patients with ILD have not been established; surgery, chemotherapy, and radiotherapy can all cause acute exacerbation of ILD. This study evaluated the toxicity and efficacy of carbon ion radiotherapy (CIRT) in patients with non-small cell lung cancer (NSCLC) and ILD. METHODS: Between June 2004 and November 2014, 29 patients diagnosed with NSCLC and ILD were treated with CIRT...
September 2, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28864047/-combination-external-beam-radiation-and-brachytherapy-boost-for-prostate-cancer
#8
O Chapet, A Bossi, S Horn, G Créhange
Brachytherapy as sole treatment is standard of care for D'Amico classification low-risk prostate cancer. For intermediate and high-risk patients, brachytherapy can be associated to external beam radiation therapy to better take into account the risk of extracapsular effraction and/or seminal vesicle involvement. Three randomized studies have shown that this association increases freedom from relapse survival compared to exclusive external beam radiation therapy. This benefit is not shown for overall survival...
August 29, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/28856770/genotoxic-effects-of-high-dose-rate-x-ray-and-low-dose-rate-gamma-radiation-in-apc-min-mice
#9
Anne Graupner, Dag M Eide, Dag A Brede, Michele Ellender, Elisabeth Lindbo Hansen, Deborah H Oughton, Simon D Bouffler, Gunnar Brunborg, Ann Karin Olsen
Risk estimates for radiation-induced cancer in humans are based on epidemiological data largely drawn from the Japanese atomic bomb survivor studies, which received an acute high dose rate (HDR) ionising radiation. Limited knowledge exists about the effects of chronic low dose rate (LDR) exposure, particularly with respect to the application of the dose and dose rate effectiveness factor. As part of a study to investigate the development of colon cancer following chronic LDR vs. acute HDR radiation, this study presents the results of genotoxic effects in blood of exposed mice...
August 30, 2017: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/28852434/a-new-natural-antioxidant-mixture-protects-against-oxidative-and-dna-damage-in-endothelial-cell-exposed-to-low-dose-irradiation
#10
T Cervelli, D Panetta, T Navarra, S Gadhiri, P Salvadori, A Galli, D Caramella, G Basta, E Picano, S Del Turco
Exposure to ionizing radiation during diagnostic procedures increases systemic oxidative stress and predisposes to higher risk of cancer and cardiovascular disease development. Many studies indicated that antioxidants protect against radiation-induced damage and have high efficacy and lack of toxicity in preventing radiation exposure damages. The purpose of this study was to investigate the in vitro protective effect of a new antioxidant mixture, named RiduROS, on oxidative stress generation and DNA double-strand breaks (DSBs) induced by low doses of X-rays in endothelial cells...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28851582/long-term-psychological-and-quality-of-life-effects-of-active-surveillance-and-watchful-waiting-after-diagnosis-of-low-risk-localised-prostate-cancer
#11
Sam J Egger, Ross J Calopedos, Dianne L O'Connell, Suzanne K Chambers, Henry H Woo, David P Smith
BACKGROUND: Long-term psychological well-being and quality-of-life are important considerations when deciding whether to undergo active treatment for low-risk localised prostate cancer. OBJECTIVE: To assess the long-term effects of active surveillance (AS) and/or watchful waiting (WW) on psychological and quality-of-life outcomes for low-risk localised prostate cancer patients. DESIGN, SETTING, AND PARTICIPANTS: The Prostate Cancer Care and Outcome Study is a population-based prospective cohort study in New South Wales, Australia...
August 26, 2017: European Urology
https://www.readbyqxmd.com/read/28830729/patient-exposure-during-fluoroscopy-guided-pacemaker-implantation-procedures
#12
M Alkhorayef, A Sulieman, E Babikir, E Daar, M Alnaaimi, M Alduaij, D Bradley
A pacemaker, which is used for heart resynchronization with electrical impulses, is used to manage many clinical conditions. Recently, the frequency of pacemaker implantation procedures has increased to more than 50% worldwide. During this procedure, patients can be exposed to excessive radiation exposure. Wide range of doses has been reported in previous studies, suggesting that optimization of this procedure has not been fulfilled yet. The current study evaluated patient radiation exposure during cardiac pacemaker procedures and quantified the patient effective dose...
August 10, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28829623/radiation-risk-to-the-fluoroscopy-operator-and-staff
#13
REVIEW
Cosette M Stahl, Quinn C Meisinger, Michael P Andre, Thomas B Kinney, Isabel G Newton
OBJECTIVE: Recent articles discussing cases of brain cancer in interventionalists have raised concerns regarding the hazards of occupational exposure to ionizing radiation. We review the basics of radiation dose and the potential radiation effects, particularly as they pertain to the operator. Then we present the data regarding the risk of each type of radiation effect to the fluoroscopy operator and staff, with special attention on cancer induction, radiation-induced cataracts, and the pregnant operator...
October 2016: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28826776/risk-of-low-dose-radiation-and-the-beir-vii-report-a-critical-review-of-what-it-does-and-doesn-t-say
#14
REVIEW
Michael K O'Connor
This article briefly reviews the history behind the BEIR VII report and the use of the linear no-threshold hypothesis. The BEIR VII committee considered four primary sources of data on the stochastic effects of ionizing radiation. These were environmental studies, occupational studies, medical studies and studies on the atomic bomb survivors. These sources are briefly reviewed along with key studies that run counter to the LNT hypothesis. We review many of the assumptions, hypotheses and subjective decisions used to generate risk estimates in the BEIR VII report...
August 18, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28826742/a-comprehensive-review-and-update-on-crohn-s-disease
#15
Mahesh Gajendran, Priyadarshini Loganathan, Anthony P Catinella, Jana G Hashash
The term inflammatory bowel disease (IBD) refers principally to two major categories of chronic relapsing inflammatory intestinal disorders: Crohn's disease (CD) and ulcerative colitis (UC). In the United States, it is currently estimated that about 1.5 million people suffer from IBD, causing considerable suffering, mortality and economic loss every year. Yet the cause of IBD is unknown, and until we understand more, prevention or cure will not be possible. There is a lot of variation in the incidence and prevalence of CD based on geographic region, environment, immigrant population, and ethnic groups...
August 18, 2017: Disease-a-month: DM
https://www.readbyqxmd.com/read/28819373/increased-transgenerational-intestinal-tumorigenesis-in-offspring-of-ionizing-radiation-exposed-parent-apc-1638n-mice
#16
Shubhankar Suman, Santosh Kumar, Bo-Hyun Moon, Albert J Fornace, Bhaskar V S Kallakury, Kamal Datta
The purpose of the study was to assess transgenerational intestinal tumorigenic effects of low dose ionizing radiation employing a well-characterized mouse model of human colorectal cancer. Mice (6 to 8 weeks old APC(1638N/+) mice; n=20 per study group) were exposed to whole-body 25 cGy x-rays and mated 2 days post-irradiation. Intestinal tumorigenesis in male and female F1 mice from No Parents Irradiated (NPI), Both Parents Irradiated (BPI), and Male Parent Irradiated (MPI) groups were compared 210 days after birth...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28814947/preserving-the-anti-scientific-linear-no-threshold-myth-authority-agnosticism-transparency-and-the-standard-of-care
#17
Bill Sacks, Jeffry A Siegel
The linear no-threshold (LNT) assumption is over 70 years old and holds that all ionizing radiation exposure leaves cumulative effects, all of which are harmful regardless of how low the dose or dose rate is. The claimed harm centers on the risk of future radiogenic cancer. This has been shown countless times to be fallacious, and hundreds of scientific studies-both experimental and observational/epidemiological-demonstrate that at low enough doses and dose rates, ionizing radiation stimulates an evolved adaptive response and therefore is beneficial to health, lowering rather than raising the risk of cancer...
July 2017: Dose-response: a Publication of International Hormesis Society
https://www.readbyqxmd.com/read/28791252/prostate-specific-antigen-5-years-following-stereotactic-body-radiation-therapy-for-low-and-intermediate-risk-prostate-cancer-an-ablative-procedure
#18
Shaan Kataria, Harsha Koneru, Shan Guleria, Malika Danner, Marilyn Ayoob, Thomas Yung, Siyuan Lei, Brian T Collins, Simeng Suy, John H Lynch, Thomas Kole, Sean P Collins
BACKGROUND: Our previous work on early PSA kinetics following prostate stereotactic body radiation therapy (SBRT) demonstrated that an initial rapid and then slow PSA decline may result in very low PSA nadirs. This retrospective study sought to evaluate the PSA nadir 5 years following SBRT for low- and intermediate-risk prostate cancer (PCa). METHODS: 65 low- and 80 intermediate-risk PCa patients were treated definitively with SBRT to 35-37.5 Gy in 5 fractions at Georgetown University Hospital between January 2008 and October 2011...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28780202/tailor-made-ge-doped-silica-glass-for-clinical-diagnostic-x-ray-dosimetry
#19
Amjad Alyahyawi, T Jupp, M Alkhorayef, D A Bradley
In the modern clinical practice of diagnostic radiology there is a growing demand for radiation dosimetry, it also being recognized that with increasing use of X-ray examinations additional population dose will result, accompanied by an additional albeit low potential for genetic consequences. At the doses typical of diagnostic radiology there is also a low statistical risk for cancer induction; in adhering to best practice, to be also implied is a low but non-negligible potential for deterministic sensitive organ responses, including in regard to the skin and eyes...
July 22, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28758177/the-5-year-outcomes-of-moderately-hypofractionated-radiotherapy-66%C3%A2-gy-in-22-fractions-3-fractions-per-week-for-localized-prostate-cancer-a-retrospective-study
#20
Yaichiro Hashimoto, Atsushi Motegi, Tetsuo Akimoto, Norio Mitsuhashi, Junpei Iizuka, Kazunari Tanabe, Yuka Ishii, Sawa Kono, Sachiko Izumi, Kumiko Karasawa
BACKGROUND: Hypofractionated radiotherapy using fewer and larger fractional doses may be more beneficial than conventional external-beam radiotherapy for localized prostate cancer. We evaluated the 5-year outcomes of moderately hypofractionated radiotherapy for localized prostate cancer. METHODS: We retrospectively evaluated 195 patients with localized prostate cancer (T1-3N0M0) who underwent intensity-modulated radiotherapy (IMRT) (66 Gy delivered in fractions of 3 Gy every other weekday) between May 2005 and December 2011...
July 31, 2017: International Journal of Clinical Oncology
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