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Prostate cancer radiotherapy

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https://www.readbyqxmd.com/read/28723660/poly-adp-ribose-polymerase-inhibitors-as-radiosensitizers-a-systematic-review-of-pre-clinical-and-clinical-human-studies
#1
REVIEW
Paul Lesueur, François Chevalier, Jean-Baptiste Austry, Waisse Waissi, Hélène Burckel, Georges Noël, Jean-Louis Habrand, Yannick Saintigny, Florence Joly
BACKGROUND: Poly-(ADP-Ribose)-Polymerase (PARP) inhibitors are becoming important actors of anti-neoplasic agents landscape, with recent but narrow FDA's approvals for ovarian BRCA mutated cancers and prostatic cancer. Nevertheless, PARP inhibitors are also promising drugs for combined treatments particularly with radiotherapy. More than seven PARP inhibitors have been currently developed. Central Role of PARP in DNA repair, makes consider PARP inhibitor as potential radiosensitizers, especially for tumors with DNA repair defects, such as BRCA mutation, because of synthetic lethality...
July 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28723511/fit-patient-with-nonmetastatic-castration-resistant-prostate-cancer-lower-urinary-tract-symptoms-and-severe-recurrent-haematuria
#2
Nuradh Joseph, Ananya Choudhury
For biochemical relapse in patients with nonmetastatic castration-resistant prostate cancer previously treated with androgen deprivation alone, external beam radiotherapy to the primary tumour and the pelvic lymph nodes is preferable to radical prostatectomy with lymphadenectomy.
December 2016: European Urology Focus
https://www.readbyqxmd.com/read/28719450/combination-of-177lu-psma-617-and-external-radiotherapy-for-the-treatment-of-cerebral-metastases-in-patients-with-castration-resistant-metastatic-prostate-cancer
#3
Xiao Wei, Carl Schlenkhoff, Bettina Schwarz, Markus Essler, Hojjat Ahmadzadehfar
Two castration-resistant prostate cancer patients, both with cerebral and visceral and lymphatic metastases, received multiple cycles of Lu-PSMA-617 treatments. The prognosis of both cases is dependent on brain metastases. Between Lu-PSMA-617 treatment cycles, local radiotherapy was also applied to the brain metastases. Prior to the combined therapy, all systemic metastases, including cerebral lesions, showed PSMA expression using Ga-PSMA PET/CT. Under the combined therapy, all the metastases, particularly the cerebral lesions, showed significant regression in size and PSMA expression over time...
July 17, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28717700/prostate-cancer-burden-at-the-uganda-cancer-institute
#4
Fred Okuku, Jackson Orem, George Holoya, Chris De Boer, Cheryl L Thompson, Matthew M Cooney
PURPOSE: In Uganda, the incidence of prostate cancer is increasing at a rate of 5.2% annually. Data describing presentation and outcomes for patients with prostate cancer are lacking. METHODS: A retrospective review of medical records for men with histologically confirmed prostate cancer at the Uganda Cancer Institute (UCI) from January 1 to December 17, 2012, was performed. RESULTS: Our sample included 182 men whose mean age was 69.5 years (standard deviation, 9...
August 2016: Journal of Global Oncology
https://www.readbyqxmd.com/read/28716370/a-systematic-review-and-framework-for-the-use-of-hormone-therapy-with-salvage-radiation-therapy-for-recurrent-prostate-cancer
#5
REVIEW
Daniel E Spratt, Robert T Dess, Zachary S Zumsteg, Daniel W Lin, Phuoc T Tran, Todd M Morgan, Emmanuel S Antonarakis, Paul L Nguyen, Charles J Ryan, Howard M Sandler, Matthew R Cooperberg, Edwin Posadas, Felix Y Feng
CONTEXT: Salvage radiotherapy (SRT) is a standard of care for men who recur postprostatectomy, and recent randomized trials have assessed the benefit and toxicity of adding hormone therapy (HT) to SRT with differing results. OBJECTIVE: To perform a systematic review of randomized phase III trials of the use of SRT ± HT and generate a framework for the use of HT with SRT. EVIDENCE ACQUISITION: Systematic literature searches were conducted on February 15, 2017 in three databases (MEDLINE [via PubMed], EMBASE, and ClinicalTrials...
July 14, 2017: European Urology
https://www.readbyqxmd.com/read/28716090/clinical-workflow-for-mr-only-simulation-and-planning-in-prostate
#6
Neelam Tyagi, Sandra Fontenla, Michael Zelefsky, Marcia Chong-Ton, Kyle Ostergren, Niral Shah, Lizette Warner, Mo Kadbi, Jim Mechalakos, Margie Hunt
PURPOSE: To describe the details and experience of implementing a MR-only workflow in the clinic for simulation and planning of prostate cancer patients. METHODS: Forty-eight prostate cancer patients from June 2016 - Dec 2016 receiving external beam radiotherapy were scheduled to undergo MR-only simulation. MR images were acquired for contouring (T2w axial, coronal, sagittal), synthetic-CT generation (3D FFE-based) and fiducial identification (3D bFFE-based). The total acquisition time was 25 min...
July 17, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28714458/a-graphical-approach-to-optimizing-variable-kernel-smoothing-parameters-for-improved-deformable-registration-of-ct-and-cone-beam-ct-images
#7
Vern Hart, Damon Burrow, X Allen Li
A systematic method is presented for determining optimal parameters in variable-kernel deformable image registration of cone beam CT and CT images, in order to improve accuracy and convergence for potential use in online adaptive radiotherapy. Assessed conditions included the noise constant (symmetric force demons), the kernel reduction rate, the kernel reduction percentage, and the kernel adjustment criteria. Four such parameters were tested in conjunction with reductions of 5, 10, 15, 20, 30, and 40%. Noise constants ranged from 1...
July 17, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28712717/radiobiological-evaluation-of-prostate-cancer-imrt-and-conformal-rt-plans-using-different-treatment-protocols
#8
Panayiotis Mavroidis, Georgios Komisopoulos, Courtney Buckey, Margarita Mavroeidi, Gregory P Swanson, Dimos Baltas, Nikos Papanikolaou, Sotirios Stathakis
The purpose of this study is to evaluate the clinical efficacy of both step-and-shoot IMRT and 3D-Conformal Radiation Therapy modalities (CRT) in treating prostate cancer using radiobiological measures. Another aim was to estimate the risks for developing secondary malignancies in bladder and rectum due to radiotherapy from the corresponding modalities. The treatment plans of ten prostate cancer patients were developed using IMRT and CRT. For the IMRT plans, two beam energies and two treatment protocols were used (the RTOG 0415 and a most restrictive one proposed by Fox Chase Cancer Center (FCCC))...
July 13, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28712283/stereotactic-radiotherapy-of-the-prostate-fractionation-and-utilization-in-the-united-states
#9
Joseph P Weiner, David Schwartz, Meng Shao, Virginia Osborn, Kwang Choi, David Schreiber
PURPOSE: To analyze the utilization and fractionation of extreme hypofractionation via stereotactic body radiotherapy (SBRT) in the treatment of prostate cancer. MATERIALS AND METHODS: Data was analyzed on men diagnosed with localized prostate cancer between 2004-2012 and treated with definitive-intent radiation therapy, as captured in the National Cancer Database. This database is a hospital-based registry that collects an estimated 70% of all diagnosed malignancies in the United States...
June 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/28712059/a-combination-of-testosterone-and-white-blood-cell-count-as-a-predictive-factor-of-overall-survival-in-localized-prostate-cancer
#10
Daniel Taussky, Denis Souliéres, Laurent Azoulay, Hui Yin, Houda Bahig, Jean-Paul Bahary, Guila Delouya
BACKGROUND: It has been shown that neutrophil count or an elevated neutrophil-to-lymphocyte ratio (NLR) as well as testosterone levels are separately associated with increased mortality in patients with localized prostate cancer. OBJECTIVE: We tested a combination of testosterone levels and white blood cell (WBC) counts to predict overall survival (OS) in a prospective cohort of patients treated with radiotherapy for localized prostate cancer. PATIENTS AND METHODS: The 381 patients included in this study were prospectively enrolled in phase 2 or 3 studies...
July 15, 2017: Targeted Oncology
https://www.readbyqxmd.com/read/28710895/erectile-function-after-stereotactic-body-radiotherapy-for-localized-prostate-cancer
#11
Robert T Dess, Holly E Hartman, Nima Aghdam, William C Jackson, Payal D Soni, Ahmed E Abugharib, Simeng Suy, Neil B Desai, Zachary S Zumsteg, Rohit Mehra, Todd M Morgan, Felix Y Feng, Daniel A Hamstra, Matthew J Schipper, Sean P Collins, Daniel E Spratt
OBJECTIVE: To elucidate the functional erection rate following prostate stereotactic body radiotherapy (SBRT) and to develop a comprehensive prognostic model of outcomes following treatment. PATIENTS AND METHODS: Between 2008 and 2013, 373 consecutive men with localized prostate cancer were treated with SBRT at a single academic institution as part of a prospective clinical trial or prospective registry. Prospective longitudinal patient-reported quality of life (HRQOL) was collected using the Expanded Prostate Cancer Index Composite (EPIC-26)...
July 15, 2017: BJU International
https://www.readbyqxmd.com/read/28710616/are-we-underestimating-the-rates-of-incontinence-after-prostate-cancer-treatment-results-from-nhanes
#12
Michael Daugherty, Raju Chelluri, Gennady Bratslavsky, Timothy Byler
PURPOSE: Local therapy for prostate cancer (PCa) includes radical prostatectomy (RP) and radiotherapy (XRT), both of which share a complication of urinary incontinence. Post-treatment incontinence has been reported to occur 6-69%, yet no truly patient-centered report has been compiled. We evaluated patient-reported incontinence rates and bother scores after treatment for prostate cancer. METHODS: The NHANES database was queried for all men who reported a diagnosis and treatment of PCa from 2001 to 2010...
July 14, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28699351/ultrahypofractionated-cyberknifetm-based-stereotactic-radiotherapy-versus-conventional-radiotherapy-in-patients-with-prostate-cancer-acute-toxicity-evaluation-in-two-phase-ii-prospective-studies
#13
G Głowacki, W Majewski, P Wojcieszek, K Grabinska, G Wozniak, L Miszczyk
Our purpose was to compare the acute toxicity of ultrahypofractionated CyberKnifeTM based stereotactic radiotherapy (SBRT Arm) and conventional radiotherapy (EBRT Arm) in prostate cancer patients. Two-hundred-sixteen men with prostate cancer were enrolled in our prospective studies. One-hundred and nine were irradiated using CyberKnife to total dose of 36,25 Gy in 5 fractions. One-hundred and seven were irradiated conventionally to total dose of 76 Gy in 38 fractions. Mean age of patients was 69. Acute genitourinary (GU) and gastrointestinal (GI) adverse-events were collected...
2017: Neoplasma
https://www.readbyqxmd.com/read/28695317/pre-radiotherapy-psa-progression-is-a%C3%A2-negative-prognostic-factor-in-prostate-cancer-patients-using-5%C3%A2-alpha-reductase-inhibitors
#14
Daniel Taussky, Julie Piotte, Kevin C Zorn, Marc Zanaty, Vimal Krishnan, Carole Lambert, Jean-Paul Bahary, Marie-Claude Beauchemin, Maroie Barkati, Cynthia Ménard, Guila Delouya
OBJECTIVE: To investigate the impact of 5‑alpha-reductase inhibitor (5-ARI) use on radiotherapy outcomes for localized prostate cancer. PATIENTS AND METHODS: We included 203 patients on a 5-ARI from our institutional database comprising over 2500 patients who had been treated with either external beam radiotherapy (EBRT) or brachytherapy for localized prostate cancer. Patients received a 5-ARI for urinary symptoms or active surveillance. Cancer progressions at the time of definitive treatment were analyzed according to the following criteria: (a) progression of Gleason score or increase in cancer volume on biopsy, (b) first biopsy positive for cancer after being treated for urinary symptoms with a 5-ARI, and (c) prostate-specific antigen (PSA) progression with or without a previous cancer diagnosis...
July 10, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28693428/inverse-probability-of-treatment-weighted-competing-risks-analysis-an-application-on-long-term-risk-of-urinary-adverse-events-after-prostate-cancer-treatments
#15
Charlotte A Bolch, Haitao Chu, Stephanie Jarosek, Stephen R Cole, Sean Elliott, Beth Virnig
BACKGROUND: To illustrate the 10-year risks of urinary adverse events (UAEs) among men diagnosed with prostate cancer and treated with different types of therapy, accounting for the competing risk of death. METHODS: Prostate cancer is the second most common malignancy among adult males in the United States. Few studies have reported the long-term post-treatment risk of UAEs and those that have, have not appropriately accounted for competing deaths. This paper conducts an inverse probability of treatment (IPT) weighted competing risks analysis to estimate the effects of different prostate cancer treatments on the risk of UAE, using a matched-cohort of prostate cancer/non-cancer control patients from the Surveillance, Epidemiology and End Results (SEER) Medicare database...
July 10, 2017: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/28693078/-effect-on-cryoablation-of-high-risk-and-locally-recurrent-prostate-cancer-a-meta-analysis
#16
X Liang, X L Yang, Z Guo
Objective: To discuss the curative effect and prognosis of cryoablation to high-risk and locally recurrent prostate cancer patients. Methods: Cryoablation related publications and relevant references were searched for potential pertinent articles until March, 2016.Articles were selected according to the exclusion criteria, Stata ver.11 was used to perform the statistical analysis. Results: 5-year biochemical disease-free survival of salvage ablation for prostate cancer was 45%(95% CI 0.43-0.47), in salvage radiotherapy of 45% (95% CI 0...
July 4, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28690772/bladder-urothelial-carcinoma-extending-to-rectal-mucosa-and-presenting-with-rectal-bleeding
#17
Andrew M Aneese, Vinayata Manuballa, Mitual Amin, Mitchell S Cappell
An 87-year-old-man with prostate-cancer-stage-T1c-Gleason-6 treated with radiotherapy in 1996, recurrent prostate cancer treated with leuprolide hormonal therapy in 2009, and bladder-urothelial-carcinoma in situ treated with Bacillus-Calmette-Guerin and adriamycin in 2010, presented in 2015 with painless, bright red blood per rectum coating stools daily for 5 mo. Rectal examination revealed bright red blood per rectum; and a hard, fixed, 2.5 cm × 2.5 cm mass at the normal prostate location. The hemoglobin was 7...
June 16, 2017: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28688613/brachytherapy-boost-utilization-and-survival-in-unfavorable-risk-prostate-cancer
#18
Skyler B Johnson, Nataniel H Lester-Coll, Jacqueline R Kelly, Benjamin H Kann, James B Yu, Sameer K Nath
BACKGROUND: There are limited comparative survival data for prostate cancer (PCa) patients managed with a low-dose rate brachytherapy (LDR-B) boost and dose-escalated external-beam radiotherapy (DE-EBRT) alone. OBJECTIVE: To compare overall survival (OS) for men with unfavorable PCa between LDR-B and DE-EBRT groups. DESIGN, SETTING, AND PARTICIPANTS: Using the National Cancer Data Base, we identified men with unfavorable PCa treated between 2004 and 2012 with androgen suppression (AS) and either EBRT followed by LDR-B or DE-EBRT (75...
July 5, 2017: European Urology
https://www.readbyqxmd.com/read/28688020/salvage-therapy-options-for-local-prostate-cancer-recurrence-after-primary-radiotherapy-a-literature-review
#19
REVIEW
Nicole M Golbari, Aaron E Katz
PURPOSE OF REVIEW: While recurrence after primary treatment of prostate cancer (PCa) is not uncommon, there is currently no consensus on the most appropriate management after radiation treatment failure. This article seeks to explore the currently utilized modalities for salvage treatment for radiorecurrent PCa. We focused our review on the oncologic outcomes and reported toxicity rates in the latest studies examining salvage radical prostatectomy (SRP), salvage cryotherapy (SCT), salvage high-intensity focused ultrasound (HIFU) and re-irradiation...
August 2017: Current Urology Reports
https://www.readbyqxmd.com/read/28687398/the-impact-of-comorbidities-on-the-benefits-of-prolonged-androgen-ablation-in-patients-with-t3-4-prostate-cancer-treated-with-external-beam-radiation-therapy
#20
Eric Tran, Matthew Paquette, Justin Jay, Jeremy Hamm, Mitchell Liu, Graeme Duncan, Tom Pickles, Scott Tyldesley
PURPOSE: To determine whether the survival benefit associated with prolonged androgen deprivation therapy (ADT) and radiotherapy (EBRT) varies with baseline estimates of overall survival in cT3-4 prostate cancer patients (PCa). METHODS AND MATERIALS: In 1997, the BC Cancer Agency adopted as standard a policy of prolonged ADT (>18months) with EBRT for locally advanced PCa. Two cohorts of cT3-T4 PCa treated with EBRT were selected: 1993-1995 (early: N=725) and 1999-2001 (late: N=584)...
July 4, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
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