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Prostate cancer radiotherapy

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https://www.readbyqxmd.com/read/28096917/assessment-of-histopathological-features-of-needle-biopsy-in-recurrent-prostate-cancer-following-salvage-high-intensity-focused-ultrasound
#1
Michele Billia, Khurram M Siddiqui, Susanne Chan, Fan Li, Ali Al-Zahrani, Jose A Gomez, Joseph L Chin
INTRODUCTION: Local recurrence of prostate cancer (PCa) following radiotherapy may be treated with curative intent using salvage high-intensity focused ultrasound (s-HIFU). The interpretation of needle core biopsy specimens following s-HIFU is a daunting task, even for experienced pathologists. We describe various histopathological features encountered in biopsy specimens following whole-gland s-HIFU in one of the largest descriptive studies to date. METHODS: Fifty-five patients with biopsy-proven localized radio-recurrent PCa underwent s-HIFU and transrectal ultrasound (TRUS)-guided prostatic needle biopsies at 180 days post-treatment...
November 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28096199/trends-in-radiation-therapy-among-cancer-survivors-in-the-united-states-2000-2030
#2
Alex K Bryant, Matthew Banegas, Maria E Martinez, Loren K Mell, James D Murphy
BACKGROUND: Although the number of cancer survivors has increased substantially over the past several decades, the composition of survivors treated with radiotherapy is not well defined. Radiotherapy carries unique long-term toxicity risks for cancer survivors. This study describes the current estimates and future projections of the epidemiology of five-year cancer survivors who receive radiation therapy. METHODS: We used cancer incidence and survival data from the Surveillance, Epidemiology, and End-Results (SEER) database linked to US Census data to estimate the number of five-year cancer survivors treated with radiation between 2000 and 2030...
January 17, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28094056/re-the-role-of-adjuvant-radiotherapy-in-pathologically-lymph-node-positive-prostate-cancer
#3
Matthias May, Christian G Stief, Sabine D Brookman-May
No abstract text is available yet for this article.
January 13, 2017: European Urology
https://www.readbyqxmd.com/read/28093890/long-term-follow-up-for-treatment-of-erectile-dysfunction-post-radical-prostatectomy-using-nerve-grafts-and-end-to-side-somatic-autonomic-neurorraphy-a-new-technique
#4
José Carlos Souza Trindade, Fausto Viterbo, André Petean Trindade, Wagner José Fávaro, José Carlos Souza Trindade Filho
: Radical prostatectomy (RP) for prostate cancer treatment, although effective, can lead to severe erectile dysfunction. This study describes a new technique, which aims to reestablish the nerve stimulus in penile erection by two sural nerve graft bridges bilaterally, using the end to side neurorraphy. The first bridge is between femoral nerve and dorsal nerve of penis and the second, is between the femoral nerve and the interior of the corpus cavernosum. In this neurorraphy the endings of the newly formed fibres, generated by the femoral nerve, release acetylcholine inside the cavernous bodies, beginning the erection mechanism...
January 17, 2017: BJU International
https://www.readbyqxmd.com/read/28093012/male-coping-through-a-long-term-cancer-trajectory-secondary-outcomes-from-a-rtc-examining-the-effect-of-a-multidisciplinary-rehabilitation-program-repca-among-radiated-men-with-prostate-cancer
#5
Karin B Dieperink, Christoffer Johansen, Steinbjørn Hansen, Lis Wagner, Klaus K Andersen, Lisbeth R Minet, Olfred Hansen
BACKGROUND: The objective of this study was to examine if rehabilitation influenced self-reported male coping styles during and up to three years after treatment with radiotherapy for prostate cancer. MATERIALS AND METHODS: In a single-center oncology unit in Odense, Denmark, 161 prostate cancer patients treated with radiotherapy and androgen deprivation therapy were included in a randomized controlled trial from 2010 to 2012. The trial examined the effect of a multidisciplinary rehabilitation program within six months of treatment consisting of two nursing counseling sessions and two instructive sessions with a physical therapist (n = 79), or standard care (n = 82)...
January 17, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28092982/second-malignancy-risk-in-prostate-cancer-and-radiotherapy
#6
Tomer Charas, Amandeep Taggar, Michael J Zelefsky
No abstract text is available yet for this article.
January 17, 2017: Future Oncology
https://www.readbyqxmd.com/read/28089528/hydrogel-spacer-distribution-within-the-perirectal-space-in-patients-undergoing-radiotherapy-for-prostate-cancer-impact-of-spacer-symmetry-on-rectal-dose-reduction-and-the-clinical-consequences-of-hydrogel-infiltration-into-the-rectal-wall
#7
Benjamin W Fischer-Valuck, Anupama Chundury, Hiram Gay, Walter Bosch, Jeff Michalski
PURPOSE: Hydrogel prostate-rectum spacers, biomaterials placed between the prostate and rectum, continue to gain interest as a method to reduce or limit rectal dose during dose escalated prostate cancer radiation therapy. Because the spacer is initially injected into the perirectal space as a liquid, the final distribution can vary. The purpose of this study was to evaluate hydrogel spacer (SpaceOAR system) implantation and distribution from a recent prospective randomized control trial and correlate spacer symmetry with rectal dose reduction as well as rectal wall infiltration (RWI) to acute and late toxicity...
October 17, 2016: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28086825/toxicity-and-quality-of-life-report-of-a-phase-ii-study-of-stereotactic-body-radiotherapy-sbrt-for-low-and-intermediate-risk-prostate-cancer
#8
Matthew J Boyer, Michael A Papagikos, Rex Kiteley, Zeljko Vujaskovic, Jackie Wu, W Robert Lee
BACKGROUND: Clinical data indicates that delivery of larger daily doses of radiation may improve the therapeutic ratio for prostate cancer compared to conventional fractionation. A phase II study of stereotactic body radiotherapy with real-time motion management and daily plan re-optimization for low to intermediate risk prostate cancer was undertaken to evaluate this hypothesis. This report details the toxicity and quality of life following treatment. METHODS: From 2009 to 2013, 60 patients with T1-T2c prostate cancer with a Gleason score of 6 and PSA ≤ 15 or Gleason score of 7 and PSA ≤ 10 were enrolled...
January 13, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28081010/biological-dose-representation-for-carbon-ion-radiotherapy-of-unconventional-fractionation
#9
Nobuyuki Kanematsu, Taku Inaniwa
In carbon-ion radiotherapy, single-beam delivery each day in alternate directions has been common practice for efficient operation, taking advantage of the Bragg peak and the relative biological effectiveness (RBE) for uniform dose conformation to a tumor. Treatments are usually fractionated and treatment plans are evaluated with the total RBE-weighted dose; however, this is of limited relevance to the biological effect. In this study, we reformulate the biologically effective dose (BED) to normalize the dose-fractionation and cell-repopulation effects as well as the RBE of treating radiation, based on inactivation of a reference cell line by a reference carbon-ion radiation...
February 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28077128/treatment-planning-comparison-of-impt-vmat-and-4%C3%AF-radiotherapy-for-prostate-cases
#10
Angelia Tran, Jingjing Zhang, Kaley Woods, Victoria Yu, Dan Nguyen, Gary Gustafson, Lane Rosen, Ke Sheng
BACKGROUND: Intensity-modulated proton therapy (IMPT), non-coplanar 4π intensity-modulated radiation therapy (IMRT), and volumetric-modulated arc therapy (VMAT) represent the most advanced treatment methods based on heavy ion and X-rays, respectively. Here we compare their performance for prostate cancer treatment. METHODS: Ten prostate patients were planned using IMPT with robustness optimization, VMAT, and 4π to an initial dose of 54 Gy to a clinical target volume (CTV) that encompassed the prostate and seminal vesicles, then a boost prescription dose of 25...
January 11, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28076338/quantification-of-confounding-factors-in-mri-based-dose-calculations-as-applied-to-prostate-imrt
#11
Matteo Maspero, Peter R Seevinck, Gerald Schubert, Michaela A U Hoesl, Bram van Asselen, Max A Viergever, Jan J W Lagendijk, Gert J Meijer, Cornelis A T van den Berg
Magnetic resonance (MR)-only radiotherapy treatment planning requires pseudo-CT (pCT) images to enable MR-based dose calculations. To verify the accuracy of MR-based dose calculations, institutions interested in introducing MR-only planning will have to compare pCT-based and computer tomography (CT)-based dose calculations. However, interpreting such comparison studies may be challenging, since potential differences arise from a range of confounding factors which are not necessarily specific to MR-only planning...
February 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28075422/inflammation-cardiometabolic-markers-and-functional-changes-in-a-randomized-controlled-trial-of-a-12-month-exercise-program-for-prostate-cancer-men
#12
Katarzyna Hojan, Eliza Kwiatkowska-Borowczyk, Ewa Leporowska, Piotr Milecki
INTRODUCTION    Previous studies have shown that physical exercise in cancer patients during radiotherapy (RT) and androgen deprivation therapy (ADT) improves cardiac fitness and quality of life (QoL), and reduces fatigue but it is still not entirely known how it affects inflammation or metabolic factors and what its consequences are in prostate cancer (PCa) patients. OBJECTIVES    Effect of a 12-month physical exercise program on inflammatory and cardiometabolic factors, and on functional status in PCa patients undergoing RT and ADT...
January 10, 2017: Polskie Archiwum Medycyny Wewnętrznej
https://www.readbyqxmd.com/read/28075176/the-adapp-trial-a-two-year-longitudinal-multidisciplinary-intervention-study-for-prostate-cancer-frail-patients-on-androgen-deprivation-associated-to-curative-radiotherapy
#13
Julie Mareschal, Kerstin Weber, Pascale Rigoli, Edmund Biason, Laura Frambati, Carole Gotteland, Thomas Zilli, Claude Pichard, Raymond Miralbell
BACKGROUND: Androgen deprivation (AD) therapy combined to radiotherapy (RT) is a curative therapeutic option for patients with non-metastatic locally advanced or aggressive intermediate prostate cancer (PC), though with a range of nutritional, physical, and psychological side effects. A multidisciplinary care program was created to help frail patients to prevent and manage those side effects. MATERIAL AND METHODS: We conducted a longitudinal interventional study in frail patients, presenting either cardiovascular/pulmonary comorbidities, old age (≥75 years), vulnerability ratings, or balance impairment...
January 11, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28069053/influence-of-daily-imaging-on-plan-quality-and-normal-tissue-toxicity-for-prostate-cancer-radiotherapy
#14
Katharina Bell, Marina Heitfeld, Norbert Licht, Christian Rübe, Yvonne Dzierma
BACKGROUND: Modern radiotherapy offers various possibilities for image guided verification of patient positioning. Different clinically relevant IGRT (image guided radiotherapy) scenarios were considered with regard to their influence on dosimetric plan quality and normal tissue complication probability (NTCP). METHODS: This study is based on treatment plans of 50 prostate patients. We evaluate the clinically performed IGRT and simulate the influence of different daily IGRT scenarios on plan quality...
January 10, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28063191/salvage-high-intensity-focused-ultrasound-hifu-for-locally-recurrent-prostate-cancer-after-failed-radiation-therapy-multi-institutional-analysis-of-418-patients
#15
Sebastien Crouzet, Andreas Blana, Francois J Murat, Gilles Pasticier, Stephen C W Brown, Giario N Conti, Roman Ganzer, Olivier Chapet, Albert Gelet, Christian G Chaussy, Cary N Robertson, Stefan Thuroff, John F Ward
OBJECTIVE: To report the oncological outcome of Salvage high-intensity focused ultrasound (S-HIFU) for locally recurrent prostate cancer (PCa) following External Beam Radiotherapy (EBRT) from a multicenter database. MATERIALS AND METHODS: This retrospective study comprises patients from 9 centers with local recurrent disease following EBRT treated with S-HIFU from 1995 to 2009. Biochemical free survival rates (BFSR) was based on the "Phoenix" definition (nadir+2)...
January 7, 2017: BJU International
https://www.readbyqxmd.com/read/28061904/classifying-high-risk-versus-very-high-risk-prostate-cancer-is-it-relevant-to-outcomes-of-conformal-radiotherapy-and-androgen-deprivation
#16
Akram Saad, Jeffrey Goldstein, Yaacov R Lawrence, Benjamin Spieler, Raya Leibowitz-Amit, Raanan Berger, Tima Davidson, Damien Urban, Lev Tsang, Dror Alezra, Ilana Weiss, Zvi Symon
OBJECTIVE: To evaluate outcomes in prostate cancer patients classified as high-risk (HR) or very high-risk (VHR) who were treated with conformal radiation therapy (CRT) and androgen deprivation therapy (ADT). METHODS: Between 11/2001 and 3/2012, 203 patients with HR disease received CRT to the prostate (78-82 Gy) and pelvic lymph nodes (46-50 Gy) with ADT (6 m-2 years). Median follow-up was 50 months (12 m-142 m). Biochemical failure was defined according to Phoenix definition...
January 6, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28055249/volumetry-of-the-dominant-intraprostatic-tumour-lesion-intersequence-and-interobserver-differences-on-multiparametric-mri
#17
Hugh Harvey, Matthew R Orton, Veronica A Morgan, Chris Parker, David Dearnaley, Cyril Fisher, Nandita M deSouza
OBJECTIVES: To establish interobserver reproducibility of tumour volumetry on individual multiparametric(mp) prostate MRI sequences, validate measurements with histology and determine whether functional to morphological volume ratios reflect Gleason score. METHODS: Forty-one men with prostate cancer treated with prostatectomy (cohort 1) or radical radiotherapy (cohort 2) who had pre-treatment mp (T2-W, DW-, DCE-) MRI were studied retrospectively. Dominant intraprostatic lesions (DIPLs) were manually delineated on each sequence and volumes compared between observers (n=40 analysable) and with radical prostatectomy (n=20)...
January 5, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28052685/occurrence-of-malignancies-after-kidney-transplantation-in-adults-slovak-multicenter-experience
#18
Z Zilinska, M Sersenova, M Chrastina, J Breza Sr, L Bena, T Baltesova, A Jurcina, R Roland, E Lackova, M Cellar, L Laca, I Dedinska
Malignancies are one of the three major causes of renal recipient´s death with a functioning graft after cardiovascular diseases and infections. Among the variety of risk factors, including conventional and specific to transplant recipients, the duration of immunosuppressive therapy, the intensity of therapy, and the type of immunosuppressive agent all have an impact on development of post-transplant malignancy. The aim of our retrospective study was to document the incidence, the type of malignancies, the patient/graft survival in the group of kidney transplant recipients in Slovak Republic, and to identify the factors which influenced the outcome...
January 5, 2017: Neoplasma
https://www.readbyqxmd.com/read/28049538/risk-of-second-cancer-following-radiotherapy-for-prostate-cancer-a-population-based-analysis
#19
Nina-Sophie Hegemann, Anne Schlesinger-Raab, Ute Ganswindt, Claudia Hörl, Stephanie E Combs, Dieter Hölzel, Jürgen E Gschwend, Christian Stief, Claus Belka, Jutta Engel
BACKGROUND: To investigate the risk of second cancer and radiation induced second cancer following prostate cancer radiotherapy. METHODS: We compared men with radiotherapy only with those treated with radical prostatectomy only and those with radiotherapy after radical prostatectomy. Cumulative incidences of second cancers were calculated. Cox analyses were performed to identify determinants influencing second cancer incidence. RESULTS: Nineteen thousand five hundred thirty eight patients were analyzed...
January 3, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28048919/su-g-jep3-05-geometry-based-transperineal-ultrasound-probe-positioning-for-image-guided-radiotherapy
#20
S Camps, F Verhaegen, P de With, D Fontanarosa
PURPOSE: The use of ultrasound (US) imaging in radiotherapy is not widespread, primarily due to the need for skilled operators performing the scans. Automation of probe positioning has the potential to remove this need and minimize operator dependence. We introduce an algorithm for obtaining a US probe position that allows good anatomical structure visualization based on clinical requirements. The first application is on 4D transperineal US images of prostate cancer patients. METHODS: The algorithm calculates the probe position and orientation using anatomical information provided by a reference CT scan, always available in radiotherapy workflows...
June 2016: Medical Physics
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