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Hypofractionation

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https://www.readbyqxmd.com/read/28230241/results-of-a-phase-ii-open-label-non-comparative-study-of-intralesional-pv-10-followed-by-radiotherapy-for-the-treatment-of-in-transit-or-metastatic-melanoma
#1
Matthew Foote, Tavis Read, Janine Thomas, Michael Wagels, Bryan Burmeister, B Mark Smithers
BACKGROUND: In-transit and recurrent dermal or subcutaneous melanoma metastases represent a significant burden of advanced disease. Intralesional Rose Bengal can elicit tumor selective ablation and a T-cell mediated abscopal effect in untreated lesions. A subset of patients in a phase II trial setting received external beam radiotherapy to their recurrent lesions with complete or partial response and no significant acute radiation reaction. METHODS: An open-label, single-arm phase II study was performed to assess the efficacy and safety of PV-10 followed by hypofractionated radiotherapy...
February 23, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28222995/acute-and-late-toxicity-in-high-risk-prostate-cancer-patients-treated-with-androgen-suppression-and-hypofractionated-pelvic-radiation-therapy
#2
Sergio Faria, Russel Ruo, Fabio Cury, Marie Duclos, Luis Souhami
PURPOSE: To report acute and late toxicity rates in patients with high-risk prostate cancer treated with androgen deprivation therapy (ADT) and moderate hypofractionated radiation therapy (HypoRT) to the prostate and nodal areas. METHODS AND MATERIALS: Patients with localized, high-risk prostate cancer were treated with a HypoRT regimen of 60 Gy in 20 fractions (4 weeks) to the prostate volume while the nodal areas received 44 Gy in the same 20 fractions delivered with intensity modulated RT with a simultaneous integrated boost technique...
January 20, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28217463/prostate-cancer-and-hypofractionation-reflections-on-recent-randomised-phase-iii-clinical-trial-results
#3
COMMENT
David Dearnaley, Emma Hall
No abstract text is available yet for this article.
February 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28210908/updates-in-outcomes-of-stereotactic-radiation-therapy-in-acromegaly
#4
REVIEW
Monica Livia Gheorghiu
Purpose Treatment of acromegaly has undergone important progress in the last 20 years mainly due to the development of new medical options and advances in surgical techniques. Pituitary surgery is usually first-line therapy, and medical treatment is indicated for persistent disease, while radiation (RT) is often used as third-line therapy. The benefits of RT (tumor volume control and decreased hormonal secretion) are hampered by the long latency of the effect and the high risk of adverse effects. Stereotactic RT methods have been developed with the aim to provide more precise targeting of the tumor with better control of the radiation dose received by the adjacent brain structures...
February 16, 2017: Pituitary
https://www.readbyqxmd.com/read/28195507/predicting-risk-factors-for-radiation-pneumonitis-after-stereotactic-body-radiation-therapy-for-primary-or-metastatic-lung-tumors
#5
Mitsuru Okubo, Tomohiro Itonaga, Tatsuhiko Saito, Sachika Shiraishi, Ryuji Mikami, Hidetugu Nakayama, Akira Sakurada, Shinji Sugahara, Kiyoshi Koizumi, Koichi Tokuuye
OBJECTIVES: To investigate risk factors for radiation-induced pneumonitis (RP) after hypofractionated stereotactic body radiotherapy (SBRT) in patients with lung tumors. METHODS: From May 2004 to January 2016, 66 patients with 71 primary or metastatic lung tumors were treated with SBRT; these 71 cases were retrospectively analyzed for RP. To explore the risk factors for RP, the following factors were investigated: age, sex, performance status, operability, number of treatments, respiratory gating, pulmonary emphysema, tumor location, and subclinical interstitial lung disease (ILD)...
February 14, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28190638/long-term-toxicity-and-health-related-quality-of-life-after-single-fraction-high-dose-rate-brachytherapy-boost-and-hypofractionated-external-beam-radiotherapy-for-intermediate-risk-prostate-cancer
#6
N Shahid, A Loblaw, H T Chung, P Cheung, E Szumacher, C Danjoux, R Sankreacha, L Zhang, A Deabreu, A Mamedov, G Morton
AIMS: To report health-related quality of life (HRQOL) and toxicity in prostate cancer patients treated with single-fraction high dose rate (HDR) brachytherapy boost and external beam radiotherapy (EBRT). MATERIALS AND METHODS: Patients with intermediate-risk prostate cancer were accrued to a phase II clinical trial of 15 Gy HDR boost and EBRT to a dose of 37.5 Gy in 15 fractions. HRQOL (Expanded Prostate Cancer Index Composite [EPIC]), urinary symptoms (International Prostate Symptom Score [IPSS]), erectile function (International Index of Erectile Function [IIEF]) and toxicity (Common Terminology Criteria for Adverse Events [CTCAE], version 3...
February 9, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28179337/mono-and-bi-weekly-hypofractionated-radiation-therapy-for-the-treatment-of-epithelial-skin-cancer-in-very-elderly-patients
#7
Maurizio Valeriani, Luca Nicosia, Linda Agolli, Chiara Reverberi, Emanuela Galvagno, Vitaliana DE Sanctis, Giuseppe Minniti, Marta Carlesimo, Mattia F Osti
BACKGROUND/AIM: Epithelial skin cancer frequently occurs in the elderly population, sometimes in an advanced stage, when intensive treatments are needed. Radiotherapy can achieve high response rates. We evaluated efficacy and tolerability of hypofractionated radiotherapy in a population of very elderly patients with locally advanced epithelial skin cancer. PATIENTS AND METHODS: Two different hypofractionated schedules were administered (21 patients): 6 Gy in 10 bi-weekly fractions (13 lesions) and 5 Gy in 12 bi-weekly fractions (13 lesions)...
2017: Anticancer Research
https://www.readbyqxmd.com/read/28179317/hypofractionated-palliative-radiotherapy-with-concurrent-radiosensitizing-chemotherapy-for-advanced-head-and-neck-cancer-using-the-quad-shot-regimen
#8
Mauricio E Gamez, Manuj Agarwal, Kenneth S Hu, John N Lukens, Louis B Harrison
AIM: To analyze the outcomes using the hypofractionated palliative radiotherapy regimen "QUAD-Shot" with concurrent radiosensitizing chemotherapy for advanced head and neck cancer. MATERIALS AND METHODS: We analyzed twenty-one patients with newly-diagnosed or recurrent head and neck cancer treated with palliative hypofractionated concurrent chemoradiation using the QUAD-Shot regimen. RESULTS: All patients received at least one cycle of RT, with sixteen patients (76%) completing all three cycles...
2017: Anticancer Research
https://www.readbyqxmd.com/read/28170130/cyclical-hypofractionated-radiotherapy-also-known-as-quad-shot-alone-using-intensity-modulated-radiotherapy-for-squamous-cell-carcinoma-of-the-parotid-gland-in-an-85-year-old-patient-with-multiple-comorbidities
#9
Whoon Jong Kil, Kevin Camphausen
BACKGROUND: Palliative radiotherapy (RT) is not commonly offered to patients with head and neck cancer because of the belief that toxicity from the RT would not provide great palliative benefits. The purpose of this study was for us to report the advantages of cyclical hypofractionated RT (QUAD Shot) using intensity-modulated RT (IMRT) for an elderly comorbid patient with head and neck cancer. METHODS: An 85-year-old multiple comorbid man with squamous cell carcinoma in the left parotid gland with left facial pain received the IMRT-QUAD Shot (14 Gy/4 fractions, twice-daily treatment with 6 hours interval, on 2 consecutive days) to lesions, which were repeated every 4 weeks 3 times...
February 7, 2017: Head & Neck
https://www.readbyqxmd.com/read/28160158/hypofractionated-whole-breast-radiotherapy-in-breast-conservation-for-early-stage-breast-cancer-a-systematic-review-and-meta-analysis-of-randomized-trials
#10
REVIEW
Luca F Valle, Surbhi Agarwal, Kathleen E Bickel, Haley A Herchek, David C Nalepinski, Nirav S Kapadia
PURPOSE: Breast conservation therapy (BCT) for early-stage breast cancer involves lumpectomy followed by whole breast radiotherapy, which can involve either standard fractionation (SRT) or accelerated fractionation (ART). This systematic review and meta-analysis was performed to determine whether any benefit exists for ART or SRT. MATERIALS AND METHODS: We searched MEDLINE (1966-2014), all seven databases of the Cochrane Library (1968-2014), EMBASE (1974-2014), clinicaltrials...
February 3, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28157113/dosimetric-and-radiobiological-comparison-of-cyberknife-and-tomotherapy-in-stereotactic-body-radiotherapy-for-localized-prostate-cancer
#11
Chun-You Chen, Liang-Ming Lee, Hsiao-Wei Yu, Steve P Lee, Hsin-Lun Lee, Yung-Wei Lin, Yu-Ching Wen, Yi-Ju Chen, Chiu-Ping Chen, Jo-Ting Tsai
BACKGROUND AND PURPOSE: As recent studies have suggested relatively low α/β for prostate cancer, the interest in hypofractionated stereotactic body radiotherapy (SBRT) for prostate cancer is rising. The aim of this study is to compare dosimetric results of Cyberknife (CK) with Tomotherapy (HT) in SBRT for localized prostate cancer. Furthermore, the radiobiologic consequences of heterogeneous dose distribution are also analyzed. MATERIAL AND METHOD: A total of 12 cases of localized prostate cancer previously treated with SBRT were collected...
January 31, 2017: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/28156499/palliative-treatment-directives-for-bone-metastases-a-quality-directed-approach-to-guiding-institutional-practice
#12
Lucille Lee, Petrina Zuvic, Isabella Bingchan Zhang, Louis Potters, Beatrice Bloom
: 188 Background: The efficacy of single fraction (fx) radiation treatment (RT) has proven to have equipoise for palliation of bone metastases when compared to courses of 10 fx or more. Despite these data, there has been a slow adoption of this practice in the US and worldwide. Examination of our multicenter practice from 2004 - 2016 showed that single fx RT utilization has remained at 17% and hypofractionationed (HFX) courses (1 or 5 fx) have remained at 71% since 2009. We hypothesized that evidence-based, treatment-guiding directives could improve HFX utilization in this population...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28154933/serious-tumor-seeding-after-brainstem-biopsy-and-its-treatment-a-case-report-and-review-of-the-literature
#13
D Pinggera, I Kvitsaridtze, G Stockhammer, W Eisner, C Thomé, C F Freyschlag, P Moser, J Kerschbaumer
Stereotactic brain biopsies for histopathological diagnosis are a common technique in case of intracranial lesions, particularly in those not amenable for resection. Tumor seeding alongside the surgical trajectory after fine-needle aspiration is a known problem in several visceral tumors. Whereas in these cases a complete resection of the biopsy trajectory may later be performed, this strategy is not feasible in stereotactic brain biopsy. We report a case of tumor seeding along the entire biopsy tract after stereotactic biopsy of a brainstem metastasis...
February 2, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28152902/the-standardization-of-skin-cancer-treatment-recommendations-through-the-analysis-of-clinical-pathways-data-and-an-evidence-based-physician-driven-committee-process
#14
Amanda Barry, Hans Benson, Zach Lorinc, Kathleen Lokay
: 147 Background: Clinical pathways (CP) have the potential to improve the quality and safety of care and lead to more predictable outcomes and costs through standardization. Via Oncology's CP program aims to standardize care at radiation centers across its nationwide network. Created through an evidence-based, physician-driven committee process, CP recommend the best treatment plan for specific patient populations based on a hierarchy of efficacy, toxicity, and cost. In the absence of definitive data, reaching a consensus on the best treatment recommendation is difficult, particularly for disease states such as melanoma, squamous cell carcinoma, and basal cell carcinoma for which a wide range of radiation doses and schedules are considered effective and regional and institutional preferences may vary...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28152251/diffusion-weighted-mri-treatment-monitoring-of-primary-hypofractionated-proton-and-carbon-ion-prostate-cancer-irradiation-using-raster-scan-technique
#15
Maya B Wolf, Christopher Edler, Diana Tichy, Matthias C Röthke, Heinz-Peter Schlemmer, Klaus Herfarth, David Bonekamp
PURPOSE: To investigate parametric changes in the apparent diffusion coefficient (ADC) at multiple timepoints during and after completion of primary proton and carbon ion irradiation of prostate cancer (PCa) as compared with normal-appearing prostate parenchyma. MATERIALS AND METHODS: In all, 92 patients with histologically confirmed PCa received either proton or carbon ion hypofractionated radiotherapy (RT). All were prospectively evaluated with diffusion-weighted magnetic resonance imaging (DWI-MRI) at five timepoints: baseline, day 10 during therapy and 6 weeks, 6 months, and 18 months after treatment...
February 2, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28130821/a-monte-carlo-approach-to-the-microdosimetric-kinetic-model-to-account-for-dose-rate-time-structure-effects-in-ion-beam-therapy-with-application-in-treatment-planning-simulations
#16
Lorenzo Manganaro, Roberto Cirio, Federico Dalmasso, Vincenzo Monaco, Roberto Sacchi, Germano Russo, Simona Giordanengo, Anna Vignati, Andrea Attili, Silvia Muraro
PURPOSE: Advanced ion beam therapeutic techniques, such as hypofractionation, respiratory gating, or laser-based pulsed beams, have dose rate time structures which are substantially different from those found in conventional approaches. The biological impact of the time structure is mediated through the β parameter in the linear quadratic (LQ) model. The aim of this study is to assess the impact of changes in the value of the β parameter on the treatment outcomes, also accounting for non instantaneous intra-fraction dose delivery or fractionation and comparing the effects of using different primary ions...
January 28, 2017: Medical Physics
https://www.readbyqxmd.com/read/28130055/optimal-dose-and-fraction-number-in-sbrt-of-lung-tumours-a-radiobiological-analysis
#17
Ruggero Ruggieri, Pavel Stavrev, Stefania Naccarato, Nadejda Stavreva, Filippo Alongi, Alan E Nahum
The efficacy of Stereotactic Body Radiation Therapy (SBRT) in early-stage non-small cell lung cancer for severely hypofractionated schedules is clinically proven. Tumour control probability (TCP) modelling might further optimize prescription dose and number of treatment fractions (n). To this end, we will discuss the following controversial questions. Which is the most plausible cell-survival model at doses per fraction (d) as high as 20Gy? Do clinical data support a dose-response relationship with saturation over some threshold-dose? Given the reduced re-oxygenation for severe hypofractionation, is the inclusion of tumour hypoxia in TCP modelling relevant? Can iso-effective schedules be derived by assuming a homogeneous tumour-cell population with α/β≈10Gy, or should distinct cell subpopulations, with different α/β values, be taken into account? Is there scope for patient-specific individualization of n? Despite the difficulty of providing definite answers to the above questions, reasonable suggestions for lung SBRT can be derived from the literature...
January 24, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28129973/acute-toxicity-and-its-dosimetric-correlates-for-high-risk-prostate-cancer-treated-with-moderately-hypofractionated-radiotherapy
#18
Moses Arunsingh, Indranil Mallick, Sriram Prasath, B Arun, Sandip Sarkar, Raj Kumar Shrimali, Sanjoy Chatterjee, Rimpa Achari
AIMS: To report the acute toxicity and the dosimetric correlates after moderately hypofractionated radiotherapy for localized prostate cancer. METHODS: A total of 101 patients with localized prostate cancer were treated with image-guided intensity-modulated radiation therapy. Patients were treated to 65Gy/25Fr/5 weeks (n = 18), or 60Gy/20Fr/4 weeks (n = 83). Most (82.2%) had high-risk or pelvic node-positive disease. Acute toxicity was assessed using Radiation Therapy Oncology Group (RTOG) acute morbidity scoring criteria...
April 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28129649/rectal-urinary-toxicity-after-hypofractionated-vs-conventional-radiotherapy-in-low-intermediate-risk-localized-prostate-cancer-systematic-review-and-meta-analysis
#19
Rossella Di Franco, Valentina Borzillo, Vincenzo Ravo, Gianluca Ametrano, Sara Falivene, Fabrizio Cammarota, Sabrina Rossetti, Francesco Jacopo Romano, Carmine D'Aniello, Carla Cavaliere, Gelsomina Iovane, Raffaele Piscitelli, Massimiliano Berretta, Paolo Muto, Gaetano Facchini
PURPOSE: The aim of this review was to compare radiation toxicity in Localized Prostate Cancer (LPC) patients who underwent conventional fractionation (CV), hypofractionated (HYPO) or extreme hypofractionated (eHYPO) radiotherapy. We analyzed the impact of technological innovation on the management of prostate cancer, attempting to make a meta-analysis of randomized trials. METHODS: PubMed database has been explored for studies concerning acute and late urinary/gastrointestinal toxicity in low/intermediate risk LPC patients after receiving radiotherapy...
22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28126475/clinical-benefits-of-new-immobilization-system-for-hypofractionated-radiotherapy-of-intrahepatic-hepatocellular-carcinoma-by-helical-tomotherapy
#20
Yong Hu, Yong-Kang Zhou, Yi-Xing Chen, Shi-Ming Shi, Zhao-Chong Zeng
OBJECTIVE: A comprehensive clinical evaluation was conducted, assessing the Body Pro-Lok immobilization and positioning system to facilitate hypofractionated radiotherapy of intrahepatic hepatocellular carcinoma (HCC), using helical tomotherapy to improve treatment precision. METHODS: Clinical applications of the Body Pro-Lok system were investigated (as above) in terms of interfractional and intrafractional setup errors and compressive abdominal breath control...
April 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
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