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https://www.readbyqxmd.com/read/28731074/left-hippocampus-sparing-whole-brain-radiotherapy-wbrt-a-planning-study
#1
Tomas Kazda, Miroslav Vrzal, Tomas Prochazka, Petr Dvoracek, Petr Burkon, Petr Pospisil, Adam Dziacky, Tomas Nikl, Radim Jancalek, Pavel Slampa, Radek Lakomy
AIMS: Unilateral sparing of the dominant (left) hippocampus during whole brain radiotherapy (WBRT) could mitigate cognitive decline, especially verbal memory, similar to the widely investigated bilateral hippocampus avoidance (HA-WBRT). The aim of this planning study is dosimetrical comparison of HA-WBRT with only left hippocampus sparing (LHA-WBRT) plans. METHODS: HA-WBRT plans for 10 patients were prepared in accordance with RTOG 0933 trial and served as baseline for comparisons with several LHA-WBRT plans prepared with an effort: 1) to maintain the same left hippocampus dosimetry ("BEST PTV") and 2) to maintain same dosimetry in planning target volume as in HA-WBRT ("BEST LH")...
July 20, 2017: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/28726173/recurrent-glioblastomas-in-the-elderly-after-maximal-first-line-treatment-does-preserved-overall-condition-warrant-a-maximal-second-line-treatment
#2
Marc Zanello, Alexandre Roux, Renata Ursu, Sophie Peeters, Luc Bauchet, Georges Noel, Jacques Guyotat, Pierre-Jean Le Reste, Thierry Faillot, Fabien Litre, Nicolas Desse, Evelyne Emery, Antoine Petit, Johann Peltier, Jimmy Voirin, François Caire, Jean-Luc Barat, Jean-Rodolphe Vignes, Philippe Menei, Olivier Langlois, Edouard Dezamis, Antoine Carpentier, Phong Dam Hieu, Philippe Metellus, Johan Pallud
A growing literature supports maximal safe resection followed by standard combined chemoradiotherapy (i.e. maximal first-line therapy) for selected elderly glioblastoma patients. To assess the prognostic factors from recurrence in elderly glioblastoma patients treated by maximal safe resection followed by standard combined chemoradiotherapy as first-line therapy. Multicentric retrospective analysis comparing the prognosis and optimal oncological management of recurrent glioblastomas between 660 adult patients aged of < 70 years (standard group) and 117 patients aged of ≥70 years (elderly group) harboring a supratentorial glioblastoma treated by maximal first-line therapy...
July 19, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28712717/radiobiological-evaluation-of-prostate-cancer-imrt-and-conformal-rt-plans-using-different-treatment-protocols
#3
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/28711478/dosimetric-comparison-of-peripheral-nsclc-sbrt-using-acuros-xb-and-aaa-calculation-algorithms
#4
Chloe C H Ong, Khong Wei Ang, Roger C X Soh, Kah Ming Tin, Jerome H H Yap, James C L Lee, Christopher M Bragg
There is a concern for dose calculation in highly heterogenous environments such as the thorax region. This study compares the quality of treatment plans of peripheral non-small cell lung cancer (NSCLC) stereotactic body radiation therapy (SBRT) using 2 calculation algorithms, namely, Eclipse Anisotropic Analytical Algorithm (AAA) and Acuros External Beam (AXB), for 3-dimensional conformal radiation therapy (3DCRT) and volumetric-modulated arc therapy (VMAT). Four-dimensional computed tomography (4DCT) data from 20 anonymized patients were studied using Varian Eclipse planning system, AXB, and AAA version 10...
July 12, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
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
#5
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/28691425/tolerance-of-combined-radiochemotherapy-in-cervical-cancer-patients
#6
Barbara Izmajłowicz, Małgorzata Rusiecka, Aleksandra Sztuder, Marcin Stępień, Agnieszka Ignatowicz- Pacyna, Beata Słocka- Romaniuk, Zbigniew Mazur, Jan Kornafel
BACKGROUND: Radiochemotherapy in cervical cancer was implemented to clinical practice based on five randomized clinical trials, published at the end of 20th century, which showed improvement in total and symptomless survivals by about 10 to 18 %. The increase of therapeutic index of such treatment can take place only at the advantage of the efficiency over the increase of its toxicity. Thus, it is necessary to monitor treatment reaction during radiochemotherapy. OBJECTIVES: The aim of this study is to assess the acute post-radiation reaction during radiochemotherapy for cervical cancer and the analysis of the reasons of the unplanned course of combined treatment...
June 27, 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28689281/optimal-fdg-pet-ct-volumetric-parameters-for-risk-stratification-in-patients-with-locally-advanced-non-small-cell-lung-cancer-results-from-the-acrin-6668-rtog-0235-trial
#7
Ali Salavati, Fenghai Duan, Bradley S Snyder, Bo Wei, Sina Houshmand, Benjapa Khiewvan, Adam Opanowski, Charles B Simone, Barry A Siegel, Mitchell Machtay, Abass Alavi
PURPOSE: In recent years, multiple studies have demonstrated the value of volumetric FDG-PET/CT parameters as independent prognostic factors in patients with non-small cell lung cancer (NSCLC). We aimed to determine the optimal cut-off points of pretreatment volumetric FDG-PET/CT parameters in predicting overall survival (OS) in patients with locally advanced NSCLC and to recommend imaging biomarkers appropriate for routine clinical applications. METHODS: Patients with inoperable stage IIB/III NSCLC enrolled in ACRIN 6668/RTOG 0235 were included...
July 8, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28687830/effect-of-the-addition-of-cetuximab-to-paclitaxel-cisplatin-and-radiation-therapy-for-patients-with-esophageal-cancer-the-nrg-oncology-rtog-0436-phase-3-randomized-clinical-trial
#8
Mohan Suntharalingam, Kathryn Winter, David Ilson, Adam P Dicker, Lisa Kachnic, André Konski, A Bapsi Chakravarthy, Christopher J Anker, Harish Thakrar, Naomi Horiba, Ajay Dubey, Joel S Greenberger, Adam Raben, Jeffrey Giguere, Kevin Roof, Gregory Videtic, Jondavid Pollock, Howard Safran, Christopher H Crane
Importance: The role of epidermal growth factor receptor (EGFR) inhibition in chemoradation strategies in the nonoperative treatment of patients with esophageal cancer remains uncertain. Objective: To evaluate the benefit of cetuximab added to concurrent chemoradiation therapy for patients undergoing nonoperative treatment of esophageal carcinoma. Design, Setting, and Participants: A National Cancer Institute (NCI) sponsored, multicenter, phase 3, randomized clinical trial open to patients with biopsy-proven carcinoma of the esophagus...
July 6, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28666552/single-dose-high-dose-rate-brachytherapy-compared-to-two-and-three-fractions-for-locally-advanced-prostate-cancer
#9
Peter Hoskin, Ana Rojas, Peter Ostler, Robert Hughes, Roberto Alonzi, Gerry Lowe
BACKGROUND: Single-dose high-dose-rate brachytherapy (HDR-BT), in a Phase-II study, was compared to two or three fractions in intermediate and high-risk localized prostate cancer. PATIENTS AND METHODS: 293 patients received 1×19Gy or 1×20Gy (A=49), 2×13Gy (B=138), or 3×10.5Gy (C=106) and assessed with prospective measures of serum PSA, late genitourinary (GU) and gastrointestinal (GI) morbidity using RTOG scales and the International Prostate Symptom Score (IPSS)...
June 27, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28666368/cost-effectiveness-of-radiation-and-chemotherapy-for-high-risk-low-grade-glioma
#10
Yushen Qian, Satoshi Maruyama, Haju Kim, Erqi L Pollom, Kiran A Kumar, Alexander L Chin, Jeremy P Harris, Daniel T Chang, Allison Pitt, Eran Bendavid, Douglas K Owens, Ben Y Durkee, Scott G Soltys
BACKGROUND: The addition of PCV (procarbazine, lomustine, vincristine) chemotherapy to radiotherapy (RT) for patients with high-risk (≥ 40 years old or sub-totally resected) low-grade glioma (LGG) results in an absolute median survival benefit of over 5 years. We evaluated the cost-effectiveness of this treatment strategy. METHODS: A decision tree with an integrated three-state Markov model was created to follow patients with high risk LGG after surgery treated with RT vs...
June 28, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28663003/postoperative-radiotherapy-after-dcis-useful-for-whom
#11
Per Karlsson
The number of patients with ductal carcinoma in situ (DCIS) increases with more widely used screening mammography programs. DCIS accounts for approximately 20% of all new breast cancer diagnoses in these programs and the natural course of this heterogeneous group of pre-invasive lesions is not fully known. Better definition of subgroups benefitting from radiotherapy and knowledge on the natural course of DCIS are important issues for the future management of DCIS. Four large randomized trials have studied the effects of postoperative radiotherapy after breast conserving surgery in patients with wider spectrum of DCIS and all of them have shown radiotherapy to halve the risk of ipsilateral events, however, without any significant effect on breast cancer mortality...
June 26, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28648948/randomized-phase-ii-study-comparing-prophylactic-cranial-irradiation-alone-to-prophylactic-cranial-irradiation-and-consolidative-extra-cranial-irradiation-for-extensive-disease-small-cell-lung-cancer-ed-sclc-nrg-oncology-rtog-0937
#12
Elizabeth M Gore, Chen Hu, Alexander Y Sun, Daniel F Grimm, Suresh S Ramalingam, Neal E Dunlap, Kristin A Higgins, Maria Werner-Wasik, Aaron M Allen, Puneeth Iyengar, Gregory M M Videtic, Russell K Hales, Ronald C McGarry, James J Urbanic, Anthony T Pu, Candice A Johnstone, Volker W Stieber, Rebecca Paulus, Jeffrey D Bradley
INTRODUCTION: RTOG-0937 is a randomized phase-II trial evaluating 1-year OS with PCI or PCI plus consolidative radiation therapy (cRT) to intra-thoracic disease and extracranial metastases for ED-SCLC. METHODS: Patients with 1-4 extracranial metastases were eligible after CR or PR to chemotherapy. Randomization was to PCI or PCI+cRT to the thorax and metastases. Original stratification included PR vs CR after chemotherapy and 1 vs 2-4 metastases; age < 65 vs > 65 was added after an observed imbalance...
June 22, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28646463/patterns-of-failure-after-radical-prostatectomy-in-prostate-cancer-implications-for-radiation-therapy-planning-after-68-ga-psma-pet-imaging
#13
Kilian Schiller, K Sauter, S Dewes, M Eiber, T Maurer, J Gschwend, S E Combs, G Habl
BACKGROUND: Salvage radiotherapy (SRT) after radical prostatectomy (RPE) and lymphadenectomy (LAE) is the appropriate radiotherapy option for patients with persistent/ recurrent prostate cancer (PC). (68)Ga-PSMA-PET imaging has been shown to accurately detect PC lesions in a primary setting as well as for local recurrence or for lymph node (LN) metastases. OBJECTIVE: In this study we evaluated the patterns of recurrence after RPE in patients with PC, putting a highlight on the differentiation between sites that would have been covered by a standard radiation therapy (RT) field in consensus after the RTOG consensus and others that would have not...
June 23, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28645692/clinical-implementation-of-combined-modulated-electron-and-photon-beams-with-conventional-mlc-for-accelerated-partial-breast-irradiation
#14
Carlos Míguez, Elisa Jiménez-Ortega, Bianey A Palma, Hector Miras, Ana Ureba, Rafael Arráns, Francisco Carrasco-Peña, Ana Illescas-Vacas, Antonio Leal
PURPOSE: To report the clinical implementation of a novel external beam radiotherapy technique for accelerated partial breast irradiation treatments based on combined electron and photon modulated beams radiotherapy (MERT+IMRT) with conventional MLC. MATERIALS AND METHODS: A group of patients was selected to test the viability of the technique. The prescribed dose was 38.5Gy, following a hypofractionated schema, and the structures were defined following the NSABP-B39/RTOG-0413 protocol...
June 20, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28643151/multi-institutional-external-validation-of-a-novel-glioblastoma-prognostic-nomogram-incorporating-mgmt-methylation
#15
Jason K Molitoris, Yuan James Rao, Rajal A Patel, Liam T Kane, Shahed N Badiyan, Haley Gittleman, Jill S Barnholtz-Sloan, Soren M Bentzen, Tim J Kruser, Jiayi Huang, Minesh P Mehta
A recent nomogram for glioblastoma (GBM) was designed to incorporate methylguanine-DNA methyltransferase (MGMT) methylation status in trial patients receiving temozolomide. Since clinical trial patients are strictly selected, compared to the general population, we performed a multi-institutional, external, independent assessment of the nomogram. Consecutive adult patients with supratentorial GBM diagnosed between June 2007 and December 2014 who initiated TMZ-based concurrent chemoradiotherapy (CRT) and were not enrolled on RTOG 0525 or 0825 were eligible...
June 22, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28629896/randomized-phase-ii-study-of-preoperative-chemoradiotherapy-panitumumab-followed-by-consolidation-chemotherapy-in-potentially-operable-locally-advanced-stage-iiia-n2-non-small-cell-lung-cancer-nrg-oncology-rtog-0839
#16
Martin J Edelman, Chen Hu, Quynh-Thu Le, Jessica S Donington, Warren D D'Souza, Adam P Dicker, Billy W Loo, Elizabeth M Gore, Gregory M M Videtic, Nathaniel R Evans, Joseph W Leach, Maximilian Diehn, Steven J Feigenberg, Yuhchyau Chen, Rebecca Paulus, Jeffrey D Bradley
INTRODUCTION: Multimodality therapy has curative potential in locally advanced non-small cell lung cancer (LASCLC). Mediastinal nodal sterilization (MNS) after induction chemoradiotherapy (CRT) can serve as an intermediate marker for efficacy. NRG Oncology RTOG 0229 demonstrated the feasibility and efficacy of combining full dose radiation (61.2Gy) with chemotherapy followed by resection and chemotherapy. Based upon that experience and evidence that epidermal growth factor receptor (EGFR) antibodies are radiosensitizing, we explored adding panitumumab to CRT followed by resection and consolidation chemotherapy in LANSCLC with a primary endpoint of MNS...
June 16, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28624048/comparison-of-two-different-types-of-oxidized-regenerated-cellulose-for-partial-breast-defects
#17
Jeeyeon Lee, Jin Hyang Jung, Wan Wook Kim, Jung Dug Yang, Jeong Woo Lee, Junjie Li, Ho Yong Park
BACKGROUND: A defect after partial mastectomy, sometimes, is hard to be filled with patient's own breast tissue. Two different types of oxidized regenerated cellulose (ORC) for filling of partial defects in small-sized breasts were compared with respect to clinicopathologic factors and outcomes. METHODS: A total of 45 patients with breast cancer underwent conventional partial mastectomy with insertion of an ORC filling material. The two filling materials used were a hemostasis-purposed ORC and adhesion barrier-purposed ORC...
June 15, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28620815/radiation-related-toxicities-and-outcomes-in-endometrial-cancer-are-obese-women-at-a-disadvantage
#18
A Smits, J McGrane, A Lopes, E Kent, R Bekkers, L Massuger, N Simpson, K Galaal
OBJECTIVE: To assess the impact of body mass index (BMI) on radiotherapy toxicities in endometrial cancer patients. METHODS: This was a retrospective cohort study of women diagnosed with endometrial cancer between January 2006 and December 2014 at the Royal Cornwall Hospital Trust. Women who received radiotherapy as part of their treatment, including external beam radiotherapy (EBRT) and/or vaginal brachytherapy were included. Radiation-related toxicities were graded according to the Radiation Therapy Oncology Group (RTOG) guidelines...
June 15, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28618234/successful-treatment-of-acute-radiation-proctitis-with-aloe-vera-a-preliminary-randomized-controlled-clinical-trial
#19
Adeleh Sahebnasagh, Arash Ghasemi, Jafar Akbari, Abbas Alipour, Hossein Lashkardoost, Shahram Ala, Ebrahim Salehifar
BACKGROUND: Acute radiation proctitis (ARP) is a common side-effect that affects up to 50% of patients receiving radiotherapy. The aim of this study was to evaluate the role of a topical preparation of Aloe vera in the treatment of ARP induced by radiotherapy of pelvic area. SUBJECTS AND INTERVENTIONS: In this double-blind placebo-controlled trial, 20 consecutive patients with ARP after external-beam radiation therapy (46-72 Gy) of pelvic malignancies were randomized to receive either Aloe vera 3% or placebo ointment, 1 g twice daily for 4 weeks...
June 15, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28581400/first-results-of-a-phase-2-trial-of-once-weekly-hypofractionated-breast-irradiation-whbi-for-early-stage-breast-cancer
#20
Anthony E Dragun, Nicholas J Ajkay, Elizabeth C Riley, Teresa L Roberts, Jianmin Pan, Shesh N Rai, Dharamvir Jain, Amy R Quillo, Charles R Scoggins, Kelly M McMasters, Shiao Y Woo
PURPOSE: To report early outcome analysis of a prospective institutional phase 2 trial of weekly hypofractionated breast irradiation (WHBI) for patients undergoing breast-conserving surgery (BCS). METHODS AND MATERIALS: Patients who underwent BCS for American Joint Committee on Cancer stage 0, I, or II breast cancer with negative surgical margins received whole-breast radiation therapy to 30 or 28.5 Gy in 5 weekly fractions with or without an additional boost. The eligibility criteria were the same as for NSABP (National Surgical Adjuvant Breast and Bowel Project) B39/RTOG (Radiation Therapy Oncology Group) 0413, and there were no restrictions on age, breast size, tumor grade, receptor status, or the use of cytotoxic chemotherapy for otherwise eligible patients...
July 1, 2017: International Journal of Radiation Oncology, Biology, Physics
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