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https://www.readbyqxmd.com/read/29245176/high-risk-of-hypogonadism-in-young-male-cancer-survivors
#1
S Isaksson, K Bogefors, O Ståhl, J Eberhard, Y Lundberg Giwercman, I Leijonhufvud, K Link, I Øra, P Romerius, J Bobjer, A Giwercman
OBJECTIVE: Cancer and its treatment in childhood and young adulthood can cause hypogonadism, leading to increased risk of long term morbidity and mortality. The aim of this study was to evaluate the risk of presenting with biochemical signs of hypogonadism in testicular cancer survivors (TCS) and male childhood cancer survivors (CCS) in relation to the type of treatment given. DESIGN: Case-control study. PATIENTS: Ninety-two TCS, 125 CCS (mean age 40 and median age 34 years, respectively; mean follow-up time 9...
December 15, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29244902/feasibility-of-predicting-tumor-motion-using-online-data-acquired-during-treatment-and-a-generalized-neural-network-optimized-with-offline-patient-tumor-trajectories
#2
Troy Teo, Syed Bilal Ahmed, Nadia Alayoubi, Neil Bruce, Ethan Lyn, Stephen Pistorius
PURPOSE: The accurate prediction of intra-fraction lung tumor motion is required to compensate for system latency in image-guided adaptive radiotherapy systems. The goal of this study was to identify an optimal prediction model that has a short learning period so that prediction and adaptation can commence soon after treatment begins, and requires minimal re-optimization for individual patients. Specifically, the feasibility of predicting tumor position using a combination of a generalized (i...
December 15, 2017: Medical Physics
https://www.readbyqxmd.com/read/29244899/spatial-response-of-synthetic-microdiamond-and-diode-detectors-measured-with-kilovoltage-synchrotron-radiation
#3
Duncan J Butler, Toby Beveridge, Joerg Lehmann, Christopher P Oliver, Andrew W Stevenson, Jayde Livingstone
PURPOSE: To map the spatial response of four solid-state radiation detectors of types commonly used for radiotherapy dosimetry. METHODS: PTW model 60016 Diode P, 60017 Diode E, 60018 Diode SRS and 60019 microDiamond detectors were radiographed using a high resolution conventional X-ray system. Their spatial response was then investigated using a 0.1 mm diameter beam of 95 keV average energy photons generated by a synchrotron. The detectors were scanned through the beam while their signal was recorded as a function of position, to map the response...
December 15, 2017: Medical Physics
https://www.readbyqxmd.com/read/29244238/transoral-robotic-surgery-for-oropharyngeal-squamous-cell-carcinoma-in-the-era-of-human-papillomavirus
#4
Omar Mahmoud, Kim Sung, Francisco J Civantos, Giovanna R Thomas, Michael A Samuels
BACKGROUND: The emergence of transoral robotic surgery (TORS) ignited the debate between surgical and nonsurgical strategies on oropharyngeal squamous cell carcinoma (SCC) management; a question further complicated by human papillomavirus (HPV). We evaluated the survival by treatment strategy independently in HPV-related and HPV-nonrelated oropharyngeal SCC. METHODS: The National Cancer Database was queried for patients with oropharyngeal SCC with known HPV status who underwent primary TORS or primary radiotherapy...
December 15, 2017: Head & Neck
https://www.readbyqxmd.com/read/29244158/znf830-mediates-cancer-chemoresistance-through-promoting-homologous-recombination-repair
#5
Guo Chen, Jianxiang Chen, Yiting Qiao, Yaru Shi, Wei Liu, Qi Zeng, Hui Xie, Xiaorui Shi, Youwei Sun, Xu Liu, Tongyu Li, Liqian Zhou, Jianqin Wan, Tian Xie, Hangxiang Wang, Fu Wang
Homologous recombination (HR), which mediates the repair of DNA double-strand breaks (DSB), is crucial for maintaining genomic integrity and enhancing survival in response to chemotherapy and radiotherapy in human cancers. However, the mechanisms of HR repair in treatment resistance for the improvement of cancer therapy remains unclear. Here, we report that the zinc finger protein 830 (ZNF830) promotes HR repair and the survival of cancer cells in response to DNA damage. Mechanistically, ZNF830 directly participates in DNA end resection via interacting with CtIP and regulating CtIP recruitment to DNA damage sites...
December 13, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/29244086/cerebral-blood-flow-changes-after-radiation-therapy-identifies-pseudo-progression-in-diffuse-intrinsic-pontine-gliomas
#6
Raphael Calmon, Stephanie Puget, Pascale Varlet, Volodia Dangouloff-Ros, Thomas Blauwblomme, Kevin Beccaria, David Grevent, Christian Sainte-Rose, David Castel, Marie-Anne Debily, Christelle Dufour, Stéphanie Bolle, Frederic Dhermain, Ana Saitovitch, Monica Zilbovicius, Francis Brunelle, Jacques Grill, Nathalie Boddaert
Background: The interval between progression and death in diffuse intrinsic pontine glioma (DIPG) is usually < 6 months. However, reports of longer patient survival following radiotherapy, in the presence of radiological signs of progression, suggest that these cases may be comparable to pseudo-progression observed in adult glioblastoma. Our aim was to identify such cases and compare their multimodal MRI features with those of patients that did not present the same evolution. Methods: Multimodal MRI of 43 children treated for DIPG were retrospectively selected at four time points: baseline, after-radiotherapy, during true-progression, and at the last-visit...
December 13, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/29243669/simultaneous-tumor-and-surrogate-motion-tracking-with-dynamic-mri-for-radiation-therapy-planning
#7
Seyoun Park, Rana Farah, Steven M Shea, Erik J Tryggestad, Russell Hales, Junghoon Lee
Respiration-induced tumor motion is a major obstacle for achieving high-precision radiotherapy of cancers in the thoracic and abdominal regions. Surrogate-based estimation and tracking methods are commonly used in radiotherapy, but with limited understanding of quantified correlation to tumor motion. In this study, we propose a method to simultaneously track the lung tumor and external surrogates to evaluate their spatial correlation in a quantitative way using dynamic MRI, which allows real-time acquisition without ionizing radiation exposure...
December 15, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29243665/anthropomorphic-thorax-phantom-for-cardio-respiratory-motion-simulation-in-tomographic-imaging
#8
Konstantin Bolwin, Björn Czekalla, Lynn Johann Frohwein, Florian Buther, Klaus P Schäfers
Patient motion during medical imaging using techniques such as computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomography (PET), or single emission computed tomography (SPECT) is well known to degrade images leading to blurring effects or severe artifacts. Motion correction methods try to overcome this degrading effects. However, they need to be validated under realistic conditions. In the present work, a sophisticated anthropomorphic thorax phantom is presented that combines several aspects of a simulator for cardio-respiratory motion...
December 15, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29243490/percutaneous-cryoablation-of-breast-tumors-in-patients-with-stable-metastatic-breast-cancer-safety-feasibility-and-efficacy
#9
Beji H, Pilleul F, Picard R, Tredan O, Bouhamama A, Peix M, Mavrovi E, Mastier C
PURPOSE: To evaluate safety, feasibility, and efficacy of percutaneous cryoablation of breast tumors in patients with clinically stable metastatic breast cancer, and to compare the findings with reports on alternative procedures, namely surgery and local radiotherapy. METHODS: Seventeen female patients (average age of 54.8 years +/- 10.8 ; range 37-72) with primary breast tumor not surgically treated because of metastatic disease were included. Patients were treated for their primary lesion by percutaneous cryotherapy in period of stable disease...
December 15, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29243454/the-use-of-laparoscopy-for-locally-advanced-rectal-cancer
#10
Niccolò Petrucciani, Aleix Martínez-Pérez, Giorgio Bianchi, Riccardo Memeo, Francesco Brunetti, Nicola De' Angelis
INTRODUCTION: In the last decades, the use of minimally invasive surgery has dramatically increased for the treatment of rectal cancer. However, no clear evidence exists on the role of laparoscopy for locally advanced rectal cancer, especially for cT4 tumors, after neoadjuvant therapy. EVIDENCE ACQUISITION: A literature search was performed on Embase, Medline, and Cochrane databases to identify relevant studies published up to November 2017 analyzing the outcomes of laparoscopic surgery for locally advanced rectal cancer...
December 14, 2017: Minerva Chirurgica
https://www.readbyqxmd.com/read/29243245/treatment-deintensification-in-human-papillomavirus-positive-oropharynx-cancer-outcomes-from-the-national-cancer-data-base
#11
Shayan Cheraghlou, Phoebe K Yu, Michael D Otremba, Henry S Park, Aarti Bhatia, Cheryl K Zogg, Saral Mehra, Wendell G Yarbrough, Benjamin L Judson
BACKGROUND: The growing epidemic of human papillomavirus-positive (HPV+) oropharyngeal cancer and the favorable prognosis of this disease etiology have led to a call for deintensified treatment for some patients with HPV+ cancers. One of the proposed methods of treatment deintensification is the avoidance of chemotherapy concurrent with definitive/adjuvant radiotherapy. To the authors' knowledge, the safety of this form of treatment de-escalation is unknown and the current literature in this area is sparse...
December 15, 2017: Cancer
https://www.readbyqxmd.com/read/29242363/diagnostic-accuracy-of-amino-acid-and-fdg-pet-in-differentiating-brain-metastasis-recurrence-from-radionecrosis-after-radiotherapy-a-systematic-review-and-meta-analysis
#12
H Li, L Deng, H X Bai, J Sun, Y Cao, Y Tao, L J States, M D Farwell, P Zhang, B Xiao, L Yang
BACKGROUND: Current studies that analyze the usefulness of amino acid and FDG-PET in distinguishing brain metastasis recurrence and radionecrosis after radiation therapy are limited by small cohort size. PURPOSE: Our aim was to assess the diagnostic accuracy of amino acid and FDG-PET in differentiating brain metastasis recurrence from radionecrosis after radiation therapy. DATA SOURCES: Studies were retrieved from PubMed, Embase, and the Cochrane Library...
December 14, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29242041/long-term-outcomes-for-neoadjuvant-versus-adjuvant-chemotherapy-in-early-breast-cancer-meta-analysis-of-individual-patient-data-from-ten-randomised-trials
#13
(no author information available yet)
BACKGROUND: Neoadjuvant chemotherapy (NACT) for early breast cancer can make breast-conserving surgery more feasible and might be more likely to eradicate micrometastatic disease than might the same chemotherapy given after surgery. We investigated the long-term benefits and risks of NACT and the influence of tumour characteristics on outcome with a collaborative meta-analysis of individual patient data from relevant randomised trials. METHODS: We obtained information about prerandomisation tumour characteristics, clinical tumour response, surgery, recurrence, and mortality for 4756 women in ten randomised trials in early breast cancer that began before 2005 and compared NACT with the same chemotherapy given postoperatively...
December 11, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/29241706/placement-of-an-absorbable-rectal-hydrogel-spacer-in-patients-undergoing-low-dose-rate-brachytherapy-with-palladium-103
#14
Amandeep S Taggar, Tomer Charas, Gil'ad N Cohen, Keeratikarn Boonyawan, Marisa Kollmeier, Sean McBride, Nitin Mathur, Antonio L Damato, Michael J Zelefsky
PURPOSE: Rates of rectal toxicity after low-dose-rate (LDR) brachytherapy for prostate cancer are dependent on rectal dose, which is associated with rectal distance from prostate and implanted seeds. Placement of a hydrogel spacer between the prostate and rectum has proven to reduce the volume of the rectum exposed to higher radiation dose levels in the setting of external beam radiotherapy. We present our findings with placing a rectal hydrogel spacer in patients following LDR brachytherapy, and we further assess the impact of this placement on dosimetry and acute rectal toxicity...
December 11, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29241084/neoadjuvant-radiotherapy-combined-with-capecitabine-and-sorafenib-in-patients-with-advanced-kras-mutated-rectal-cancer-a-phase-i-ii-trial-sakk-41-08
#15
Roger von Moos, Dieter Koeberle, Sabina Schacher, Stefanie Hayoz, Ralph C Winterhalder, Arnaud Roth, György Bodoky, Panagiotis Samaras, Martin D Berger, Daniel Rauch, Piercarlo Saletti, Ludwig Plasswilm, Daniel Zwahlen, Urs R Meier, Pu Yan, Paola Izzo, Dirk Klingbiel, Daniela Bärtschi, Kathrin Zaugg
BACKGROUND: KRAS mutation occurs in ∼40% of locally advanced rectal cancers (LARCs). The multitarget tyrosine kinase inhibitor sorafenib has radiosensitising effects and might improve outcomes for standard preoperative chemoradiotherapy in patients with KRAS-mutated LARC. METHODS: Adult patients with KRAS-mutated T3/4 and/or N1/2M0 LARC were included in this phase I/II study. The phase I dose-escalation study of capecitabine plus sorafenib and radiotherapy was followed by a phase II study assessing efficacy and safety...
December 11, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/29240541/surveillance-or-metastasis-directed-therapy-for-oligometastatic-prostate-cancer-recurrence-a-prospective-randomized-multicenter-phase-ii-trial
#16
Piet Ost, Dries Reynders, Karel Decaestecker, Valérie Fonteyne, Nicolaas Lumen, Aurélie De Bruycker, Bieke Lambert, Louke Delrue, Renée Bultijnck, Tom Claeys, Els Goetghebeur, Geert Villeirs, Kathia De Man, Filip Ameye, Ignace Billiet, Steven Joniau, Friedl Vanhaverbeke, Gert De Meerleer
Purpose Retrospective studies suggest that metastasis-directed therapy (MDT) for oligorecurrent prostate cancer (PCa) improves progression-free survival. We aimed to assess the benefit of MDT in a randomized phase II trial. Patients and Methods In this multicenter, randomized, phase II study, patients with asymptomatic PCa were eligible if they had had a biochemical recurrence after primary PCa treatment with curative intent, three or fewer extracranial metastatic lesions on choline positron emission tomography-computed tomography, and serum testosterone levels > 50 ng/mL...
December 14, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29240246/hyperthermia-enhances-radiosensitivity-of-colorectal-cancer-cells-through-ros-inducing-autophagic-cell-death
#17
Ming-Chen Ba, Hui Long, Shuai Wang, Yin-Bing Wu, Bo-Huo Zhang, Zhao-Fei Yan, Fei-Hong Yu, Shu-Zhong Cui
BACKGROUND: Hyperthermia (HT) enhances the anti-cancer effects of radiotherapy (RT), but the precise biochemical mechanisms involved are unclear. This study was aim to investigate if mild HT sensitizes colorectal cancer cells to RT through reactive oxygen species (ROS)-inducing autophagic cell death in a mice model of HCT116 human colorectal cancer. METHODS: HCT116 mice model were randomly divided into five groups: mock group, hyperthermia group (HT), radiotherapy group (RT), HT + RT group, and HT + RT +N-acetyl L-cysteine (NAC) group (HT + CT + NAC)...
December 14, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29239971/optimizing-radiotherapy-for-keloids-a-meta-analysis-systematic-review-comparing-recurrence-rates-between-different-radiation-modalities
#18
Jeong Hyeon Kim, Jeong Mo Koo, Tae Hwan Park
No abstract text is available yet for this article.
January 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29239464/cd20-role-in-pathophysiology-of-hodgkin-s-disease
#19
Marcelo Antônio Oliveira Santos, Marinus de Moraes Lima
Hodgkin's lymphoma (HL) is a tumor comprising non-malignant and malignant B-cells. Classical HL expresses CD15+ and CD30+ antigens, and 20 to 40% of patients are CD20+. This antigen is a ligand free protein present in B lymphocyte cells and its function is not well known. Some studies suggest that expression of CD20 may play a major role in Hodgkin's disease pathophysiology and may affect the patients' treatment prognosis, as well as relapse and refractory response. In the past few years, development of monoclonal anti-CD20 antibodies changed drastically the treatment for non-Hodgkin lymphomas in which CD20 is expressed...
September 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/29239460/guidelines-for-the-treatment-of-lung-cancer-using-radiotherapy
#20
Michael J Chen, Paulo Eduardo Novaes, Rafael Gadia, Rodrigo Motta
No abstract text is available yet for this article.
September 2017: Revista da Associação Médica Brasileira
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