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https://www.readbyqxmd.com/read/29457751/intra-and-inter-fraction-uncertainties-during-igrt-for-wilms-tumor
#1
Filipa Guerreiro, Enrica Seravalli, Geert O Janssens, Cees P van de Ven, Marry M van den Heuvel-Eibrink, Bas W Raaymakers
BACKGROUND AND PURPOSE: To assess intra- and inter-fraction motion uncertainties, due to displacements of the tumor bed (TB) and organs at risk (OAR), as well as intra- and inter-fraction patient set-up uncertainties, due to positioning variations, during image-guided radiation therapy (IGRT) in children with Wilms' tumor. MATERIAL AND METHODS: Four-dimensional computed tomography (4D-CT) and daily pre- and post-treatment cone-beam CT (CBCT)-scans of 15 patients (average 4, range 1-8 years) undergoing flank irradiation after nephrectomy were analyzed...
February 19, 2018: Acta Oncologica
https://www.readbyqxmd.com/read/29456738/recurrence-of-adenoid-cystic-carcinoma-of-the-trachea-treated-with-radical-radiotherapy-a-case-report
#2
Konrad Pawlewicz, Zbigniew Szutkowski, Andrzej Kawecki
Adenoid cystic carcinoma (ACC) of the trachea is a relatively rare tumor among thoracic diseases. The present study reports the case of a 23-year-old woman with ACC of the trachea who underwent surgical resection of the tumor in The National Institute of Tuberculosis and Lung Diseases (Warsaw, Poland). Histopathological examination revealed that the tumor was not completely resected (R2 resection) and strict observation of the patient was therefore prescribed. After ~9 years of follow-up, clinical and histopathological tumor progression was confirmed and the patient was referred to the Centre of Oncology in Warsaw...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29456736/-brucea-javanica-seed-oil-enhances-the-radiosensitivity-of-esophageal-cancer-by-inhibiting-hypoxia-inducible-factor-1%C3%AE-in-vitro-and-in-vivo
#3
Peng Pan, Bai-Xia Yang, Xiao-Lin Ge
Brucea javanica oil emulsion (BJOE) has been used clinically to treat esophageal cancer combined with radiotherapy for numerous years in China. However, the detailed mechanism remains unclear. Thus, the effects of BJOE on the radiosensitivity of esophageal squamous cell carcinoma (ESCC) were evaluated in vitro and in vivo . The growth inhibitory effects of different BJOE concentrations were determined through an MTT assay. Radiosensitivity was evaluated through focal formation measurements and clone formation assays...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29455369/intradural-spinal-tumors-in-adults-update-on-management-and-outcome
#4
REVIEW
Malte Ottenhausen, Georgios Ntoulias, Imithri Bodhinayake, Finn-Hannes Ruppert, Stefan Schreiber, Annette Förschler, John A Boockvar, Andreas Jödicke
Among spinal tumors that occur intradurally, meningiomas, nerve sheath tumors, ependymomas, and astrocytomas are the most common. While a spinal MRI is the state of the art to diagnose intradural spinal tumors, in some cases CT scans, angiography, CSF analyses, and neurophysiological examination can be valuable. The management of these lesions depends not only on the histopathological diagnosis but also on the clinical presentation and the anatomical location, allowing either radical resection as with most extramedullary lesions or less invasive strategies as with intramedullary lesions...
February 17, 2018: Neurosurgical Review
https://www.readbyqxmd.com/read/29454863/potentially-functional-variants-of-atg16l2-predict-radiation-pneumonitis-and-outcomes-in-patients-with-non-small-cell-lung-cancer-after-definitive-radiotherapy
#5
Juyi Wen, Hongliang Liu, Lili Wang, Xiaomeng Wang, Ning Gu, Zhensheng Liu, Ting Xu, Daniel R Gomez, Ritsuko Komaki, Zhongxing Liao, Qingyi Wei
INTRODUCTION: Autophagy not only plays an important role in the progression of cancer but also is involved in tissue inflammatory response. However, few published studies have investigated associations between functional genetic variants of autophagy-related genes and radiation pneumonitis (RP) as well as clinical outcomes in patients with non-small cell lung cancer (NSCLC) after definitive radiotherapy. METHODS: We genotyped nine potentially functional single nucleotide polymorphisms (SNPs) in four autophagy-related genes (ATG2B, ATG10, ATG12 and ATG16L2) in 393 North American NSCLC patients treated by definitive radiotherapy and assessed their associations with RP, local recurrence-free survival (LRFS), progression-free survival (PFS) and overall survival (OS) in multivariable Cox proportional hazards regression analyses...
February 15, 2018: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29454737/adjuvant-radiotherapy-for-positive-lymph-nodes-of-oesophageal-squamous-cell-carcinoma-can-it-earn-promising-benefits-at-long-term-follow-up
#6
Y Ren, J Ye, W Xiong, J Zuo, Y He, M Tan, Y Yuan
PURPOSE: The value of adjuvant radiotherapy for patients with positive lymph nodes after curative resection of oesophageal squamous cell carcinoma is controversial. This study aims to investigate its long-term benefits in a specific cohort. PATIENTS AND METHODS: The charts between 1990 and 2003 from patients with positive lymph nodes were retrospectively reviewed. Those subjects were divided into adjuvant radiotherapy and surgery alone groups, with two subgroups defined by radiation dose (cutoff value: 50Gy)...
February 14, 2018: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/29454311/radiotherapy-related-skin-toxicity-rarest-01-mepitel%C3%A2-film-versus-standard-care-in-patients-with-locally-advanced-head-and-neck-cancer
#7
Carlos Narvaez, Claudia Doemer, Christian Idel, Cornelia Setter, Denise Olbrich, Zaza Ujmajuridze, Jesper Hansen Carl, Dirk Rades
BACKGROUND: The aim of the present trial is to investigate a new option of skin protection in order to reduce the rate of grade ≥ 2 skin toxicity in patients receiving radiotherapy alone or radiochemotherapy for locally advanced squamous cell carcinoma of the head-and-neck (SCCHN). METHODS / DESIGN: This is a randomized, active-controlled, parallel-group multi-center trial that compares the following treatments of radiation dermatitis in patients with head-and-neck cancer: Mepitel® Film (Arm A) vs...
February 17, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29453893/cbct-guided-evolutive-library-for-cervical-adaptive-imrt
#8
Bastien Rigaud, Antoine Simon, Maxime Gobeli, Caroline Lafond, Julie Leseur, Anais Barateau, Nicolas Jaksic, Joël Castelli, Danièle Williaume, Pascal Haigron, Renaud De Crevoisier
PURPOSE: In the context of adaptive radiation therapy (ART) for locally advanced cervical carcinoma (LACC), this study proposed an original cone-beam computed tomography (CBCT)-guided "Evolutive library" and evaluated it against four other known radiotherapy (RT) strategies. MATERIAL AND METHODS: For 20 patients who underwent intensity-modulated radiation therapy (IMRT) for LACC, three planning CTs (with empty [EB], intermediate [IB], and full [FB] bladder volumes), a CT scan at 20 Gy and bi-weekly CBCTs for 5 weeks were performed...
February 17, 2018: Medical Physics
https://www.readbyqxmd.com/read/29453321/inhibition-of-cd95-cd95l-signaling-with-apg101-prevents-invasion-and-enhances-radiation-therapy-for-glioblastoma
#9
Jonas Blaes, Carina M Thomé, Philipp-Niclas Pfenning, Petra Rübmann, Felix Sahm, Antje Wick, Theresa Bunse, Torsten Schmenger, Jaromir Sykora, Andreas von Deimling, Benedikt Wiestler, Christian Merz, Manfred Jugold, Uwe Haberkorn, Amir Abdollahi, Jürgen Debus, Christian Gieffers, Claudia Kunz, Martin Bendszus, Michael Kluge, Michael Platten, Harald Fricke, Wolfgang Wick, Dieter Lemke
CD95 (Fas/APO-1), a death receptor family member, activity has been linked to tumorigenicity in multiple cancers, including glioblastoma multiforme (GBM). A phase II clinical trial on relapsed glioblastoma patients demonstrated that targeted inhibition of CD95 signaling via the CD95 ligand (CD95L) binding and neutralizing Fc-fusion protein APG101 (asunercept) prolonged patient survival. While CD95 signaling may be relevant for multiple aspects of tumor growth, the mechanism of action of APG101 in glioblastoma is not clear...
February 16, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29452269/progress-in-radiotherapy-for-regional-and-oligometastatic-disease-in-2017
#10
REVIEW
Suresh Senan, Chad G Rusthoven, Ben J Slotman, Shankar Siva
This review highlights key publications and abstracts in the field of radiation oncology for lung cancer in 2017, and attempts to place these in the context of developments for the broader thoracic oncology community.
February 13, 2018: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29450811/debulking-surgery-of-pituitary-adenoma-as-a-strategy-to-facilitate-definitive-stereotactic-radiosurgery
#11
Neil Forster, Ronald Warnick, Vinita Takiar, Luke Pater, John Breneman
In patients with pituitary adenomas (PA) who are unable to undergo complete surgical resection, radiation therapy (RT), specifically stereotactic radiosurgery (SRS), results in excellent local control. However, the utility of radiosurgery may be limited by the proximity of the lesion to the optic chiasm (OC). We evaluate the efficacy of debulking surgery in increasing the PA-OC separation to convert patients into SRS candidates. From 2007 to 2015, 31 patients with PA < 2 mm from the OC underwent debulking surgery followed by RT within 2 years of resection...
February 15, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29450589/effect-of-continuous-positive-airway-pressure-administration-during-lung-stereotactic-ablative-radiotherapy-a-comparative-planning-study
#12
Dario Di Perri, Andréa Colot, Antoine Delor, Randa Ghoul, Guillaume Janssens, Valérie Lacroix, Pascal Matte, Annie Robert, Kevin Souris, Xavier Geets
PURPOSE: By increasing lung volume and decreasing respiration-induced tumour motion amplitude, administration of continuous positive airway pressure (CPAP) during stereotactic ablative radiotherapy (SABR) could allow for better sparing of the lungs and heart. In this study, we evaluated the effect of CPAP on lung volume, tumour motion amplitude and baseline shift, as well as the dosimetric impact of the strategy. METHODS: Twenty patients with lung tumours referred for SABR underwent 4D-computed tomography (CT) scans with and without CPAP (CPAP/noCPAP) at two timepoints (T0/T1)...
February 15, 2018: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/29449057/prognostic-significance-of-human-papilloma-virus-and-p16-expression-in-patients-with-vulvar-squamous-cell-carcinoma-who-received-radiotherapy
#13
M L Yap, G Allo, J Cuartero, M Pintilie, S Kamel-Reid, J Murphy, H Mackay, B Clarke, A Fyles, M Milosevic
AIMS: Human papilloma virus (HPV) has been identified as an aetiological agent in a subset of patients with vulvar squamous cell carcinoma (VSCC). The prognostic role of HPV status in VSCC patients treated with radiotherapy has not yet been determined. We investigated the associations between HPV, p16 and clinical outcome in these women. MATERIALS AND METHODS: Patients undergoing potentially curative radiation treatment for VSCC at a single institution from 2000 to 2009 were retrospectively identified...
February 12, 2018: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/29448860/therapeutic-ionizing-radiation-induced-bone-loss-a-review-of-in-vivo-and-in-vitro-findings
#14
Jian Zhang, Xinyu Qiu, Kedi Xi, Wentao Hu, Hailong Pei, Jing Nie, Ziyang Wang, Jiahan Ding, Peng Shang, Bingyan Li, Guangming Zhou
Radiation therapy is one of the routine treatment modalities for cancer patients. Ionizing radiation (IR) can induce bone loss, and consequently increases the risk of fractures with delayed and nonunion of the bone in the cancer patients who receive radiotherapy. The orchestrated bone remodeling can be disrupted due to the affected behaviors of bone cells, including bone mesenchymal stem cells (BMSCs), osteoblasts and osteoclasts. BMSCs and osteoblasts are relatively radioresistant compared with osteoclasts and its progenitors...
February 15, 2018: Connective Tissue Research
https://www.readbyqxmd.com/read/29448858/long-term-results-of-the-aieop-mh-96-childhood-hodgkin-s-lymphoma-trial-and-focus-on-significance-of-response-to-chemotherapy-and-its-implication-in-low-risk-patients-to-avoid-radiotherapy
#15
Roberta Burnelli, Simona Rinieri, Roberto Rondelli, Alessandra Todesco, Maurizio Bianchi, Alberto Garaventa, Marco Zecca, Paolo Indolfi, Valentino Conter, Nicola Santoro, Maurizio Aricò, Simone Cesaro, Salvatore D'amico, Piero Farruggia, Raffaela De Santis, Franco Locatelli, Stefano A Pileri, Giovanni Scarzello, Maurizio Mascarin, Vico Vecchi
Identify a subset of early-stage HL children (GR1) curable with limited chemotherapy+/-radiotherapy; improve outcome of intermediate (GR2) and high-risk (GR3) patients; establish impact of response to chemotherapy evaluated with conventional imaging (CI). One hundred and sixty GR1-patients received 3ABVD + involved-field (IF) low-dose (LD) (20 Gy) irradiation if mediastinal mass or partial response (PR) after chemotherapy. Eighty-five GR2- and 315 GR3-patients received 4 and 6 COPP/ABV + IFRT, respectively...
February 16, 2018: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/29448307/histopathological-changes-resulting-from-selective-internal-radiotherapy-sirt
#16
Christoph Justinger, Juliana Gruden, Konstantinos Kouladouros, Christos Stravodimos, Peter Reimer, Andrea Tannapfel, Martin Binnenhei, Martin Bentz, Klaus Tatsch, Thomas Rüdiger, Michael R Schön
BACKGROUND: Selective internal radiotherapy (SIRT) has emerged as an effective therapy for patients with liver malignancies. Here, we report our analysis of histopathological changes in tumors and healthy liver tissue after SIRT and liver resection. Our main intent was to determine if specific histopathological changes occur in tumor and normal liver tissues. METHODS: We identified 17 patients in whom SIRT was applied to achieve liver resectability. Samples were taken from the resected liver tissue...
February 15, 2018: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29448084/radiotherapy-controversies-and-prospective-in-head-and-neck-cancer-a-literature-based-critical-review
#17
REVIEW
Francesca De Felice, Antonella Polimeni, Valentino Valentini, Orlando Brugnoletti, Andrea Cassoni, Antonio Greco, Marco de Vincentiis, Vincenzo Tombolini
In treating head and neck cancer (HNC), the objectives are provided for best functional results and minimal risk of serious complications. The choice of appropriate management depends primarily on specific site and stage of primary tumor at diagnosis. Radiation therapy (RT) with or without concomitant chemotherapy represents a classical treatment option. In this review, we provide an update of recent research strategies to counteract the existing damage caused by RT and highlight clinical trials currently in progress...
February 12, 2018: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/29446451/practical-data-collection-and-extraction-for-big-data-applications-in-radiotherapy
#18
Todd R McNutt, Michael Bowers, Sierra Cheng, Peijin Han, Xuan Hui, Joseph Moore, Scott Robertson, Charles Mayo, Ranh Voong, Harry Quon
The capture of high quality treatment and outcomes data is necessary in order to learn from our clinical experiences with big data analytics. In radiotherapy, there are several practical challenges to overcome. Practical aspects of data collection are discussed pointing to a need for a culture change in clinical practice to one that captures structured patient related data in routine care in a prospective manner. Radiation dosimetry and the contoured anatomy must also be captured routinely to represent the best estimate of delivered radiation...
February 15, 2018: Medical Physics
https://www.readbyqxmd.com/read/29446317/credentialing-of-radiotherapy-centres-in-australasia-for-trog-09-02-chisel-a-phase-iii-clinical-trial-on-stereotactic-ablative-body-radiotherapy-of-early-stage-lung-cancer
#19
Tomas Kron, Brent Chesson, Nicholas Hardcastle, Melissa Crain, Natalie Clements, Mark Burns, David Ball
OBJECTIVE: A randomised clinical trial comparing Stereotactic Ablative Body Radiotherapy (SABR) with conventional radiotherapy for early stage lung cancer has been conducted in Australia and New Zealand under the auspices of the TransTasman Radiation Oncology Group (NCT01014130). We report on the technical credentialing program as prerequisite for centres joining the trial. METHODS: Participating centres were asked to develop treatment plans for two test cases to assess their ability to create plans according to protocol...
February 15, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29446083/development-and-clinical-characterization-of-a-novel-2041-liquid-filled-ionization-chambers-array-for-high-resolution-verification-of-radiotherapy-treatments
#20
L Brualla-González, A Vázquez-Luque, M Zapata, D M González-Castaño, V Luna-Vega, J Guiu-Souto, J Prieto-Pena, T García, D Granero, A Vicedo, J Rosellò, M Pombar, F Gómez, J Pardo-Montero
PURPOSE: To present a novel 2041 liquid-filled ionization chamber array for high-resolution verification of radiotherapy treatments. MATERIALS AND METHODS: The prototype has 2041 ionization chambers of 2.5×2.5 mm 2 area filled with isooctane. The detection elements are arranged in a central square grid of 43×43, totally covering an area of 107.5×107.5 mm 2 . The central inline and crossline are extended to 227 mm and the diagonals to 321 mm in order to be able to perform profile measurements of large fields...
February 15, 2018: Medical Physics
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