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pre-operative radiotherapy

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https://www.readbyqxmd.com/read/28078119/surgical-outcomes-of-post-chemoradiotherapy-unresectable-locally-advanced-rectal-cancers-improve-with-interim-chemotherapy-is-folfirinox-better-than-capox
#1
Vikas Ostwal, Reena Engineer, Anant Ramaswamy, Arvind Sahu, Saurabh Zanwar, Suprita Arya, Supriya Chopra, Munita Bal, Prachi Patil, Ashwin Desouza, Avanish Saklani
BACKGROUND: Role of chemotherapy in patients who continue to have unresectable disease after pre-operative chemo-radiotherapy (CRT) remains largely unaddressed. METHODS: Patients with LA rectal cancer from January 2013 to June 2015 were evaluated. Post-CRT, patients, who were deemed unresectable, were considered for further interim chemotherapy (i-CT). RESULTS: Seventy six patients (15%) with median age of 38.5 years received i-CT after CRT...
December 2016: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28078118/less-than-12-lymph-nodes-in-the-surgical-specimen-after-neoadjuvant-chemo-radiotherapy-an-indicator-of-tumor-regression-in-locally-advanced-rectal-cancer
#2
Jaiprakash Gurawalia, Kapil Dev, Sandeep P Nayak, Vishnu Kurpad, Arun Pandey
BACKGROUND: The number of lymph node retrieved in the surgical specimen is important for tumor staging and has paramount impact on prognosis in colorectal cancer and imitates the adequacy of lymph node surgical clearance. The paucity of lymph node yields in patients undergoing resection after preoperative chemo radiotherapy (CRT) in rectal cancer has seen. Lower total number of lymph nodes in the total mesoractal excision (TME) specimen after CRT, could a marker of better tumor response...
December 2016: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28054101/management-of-bilateral-wilms-tumours
#3
REVIEW
Alastair J W Millar, Sharon Cox, Alan Davidson
Wilms tumour is named after Max Wilms. It is an embryonal tumour derived from the metanephros. It is the commonest childhood renal tumour and the third commonest paediatric malignancy. Synchronous bilateral Wilms tumours (BWT) represent 4-7% of all Wilms tumours (WT) and present at a younger age than unilateral Wilms tumours. At least 10% of synchronous BWTs have unfavourable histology, and up to 22% are associated with genitourinary abnormalities, aniridia, WAGR syndrome, Denys-Drash Syndrome, hemihypertrophy, or one of the other overgrowth syndromes...
January 4, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28052186/axillary-treatment-for-operable-primary-breast-cancer
#4
REVIEW
Nathan Bromham, Mia Schmidt-Hansen, Margaret Astin, Elise Hasler, Malcolm W Reed
BACKGROUND: Axillary surgery is an established part of the management of primary breast cancer. It provides staging information to guide adjuvant therapy and potentially local control of axillary disease. Several alternative approaches to axillary surgery are available, most of which aim to spare a proportion of women the morbidity of complete axillary dissection. OBJECTIVES: To assess the benefits and harms of alternative approaches to axillary surgery (including omitting such surgery altogether) in terms of overall survival; local, regional and distant recurrences; and adverse events...
January 4, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28048831/su-g-jep4-01-an-assessment-of-a-microsoft-kinect-v2-sensor-for-voluntary-breath-hold-monitoring-in-radiotherapy
#5
D Edmunds, E Donovan
PURPOSE: To determine whether the Microsoft Kinect Version 2 (Kinect v2), a commercial off-the-shelf (COTS) depth sensors designed for entertainment purposes, were robust to the radiotherapy treatment environment and could be suitable for monitoring of voluntary breath-hold compliance. This could complement current visual monitoring techniques, and be useful for heart sparing left breast radiotherapy. METHODS: In-house software to control Kinect v2 sensors, and capture output information, was developed using the free Microsoft software development kit, and the Cinder creative coding C++ library...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047826/we-ab-207b-02-a-bayesian-network-approach-for-joint-prediction-of-tumor-control-and-radiation-pneumonitis-rp-in-non-small-cell-lung-cancer-nsclc
#6
Y Luo, D McShan, M Matuszak, S Hobson, S Jolly, R Ten Haken, I El Naqa
PURPOSE: NSCLC radiotherapy treatment is a trade-off between controlling the tumor while limiting radiation-induced toxicities. Here we identify hierarchical biophysical relationships that could simultaneously influence both local control (LC) and RP by using an integrated Bayesian Networks (BN) approach. METHODS: We studied 79 NSCLC patients treated on prospective protocol with 56 cases of LC and 21 events of RP. Beyond dosimetric information, each patient had 193 features including 12 clinical factors, 60 circulating blood cytokines before and during radiotherapy, 62 microRNAs, and 59 single-nucleotide polymorphisms (SNPs)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047820/we-ab-202-02-incorporating-regional-ventilation-function-in-predicting-radiation-fibrosis-after-concurrent-chemoradiotherapy-for-lung-cancer
#7
F Lan, J Jeudy, S Senan, J van Sornsen de Koste, H Tseng, J Zhou, W D'Souza, H Zhang
PURPOSE: To investigate the incorporation of pre-therapy regional ventilation function in predicting radiation fibrosis (RF) in stage III non-small-cell lung cancer (NSCLC) patients treated with concurrent thoracic chemoradiotherapy. METHODS: 37 stage III NSCLC patients were retrospectively studied. Patients received one cycle of cisplatin-gemcitabine, followed by two to three cycles of cisplatin-etoposide concurrently with involved-field thoracic radiotherapy between 46 and 66 Gy (2 Gy per fraction)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047686/we-fg-202-04-decomposition-of-fdg-pet-based-differential-uptake-volume-histograms-in-rectal-cancer-patients
#8
J Schneider, T Vuong, N Tomic, M Hickeson, R Lisbona, F DeBlois, J Seuntjens, S Devic
PURPOSE: The goal of this study is to test the possible use of the analytical decomposition of differential uptake volume histograms (dUVHs) obtained from FDG-PET/CT data to isolate sub-volumes within a tumor known as biological target volumes (BTVs). METHODS: A retrospective study was conducted on a cohort of 20 histo-pathologically confirmed rectal adenocarcinoma patients having PET/CT scans for staging. All patients (T3N0) underwent pre-operative endorectal brachytherapy...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047249/su-f-t-351-establishing-a-workflow-for-imrt-pre-treatment-reviews-for-nrg-gy006-clinical-trial
#9
T Giaddui, N Li, K Curry, K Moore, L Mell, C Leath, C Kunos, Y Xiao
PURPOSE: To establish a workflow for NRG-GY006 IMRT pre-treatment reviews, incorporating advanced radiotherapy technologies being evaluated as part of the clinical trial. METHODS: Pre-Treatment reviews are required for every IMRT case as part of NRG-GY006 (a randomized phase II trial of radiation therapy and cisplatin alone or in combination with intravenous triapine in women with newly diagnosed bulky stage I B2, stage II, IIIB, or IVA cancer of the uterine cervix or stage II-IVA vaginal cancer...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046841/su-g-bra-01-a-real-time-tumor-localization-and-guidance-platform-for-radiotherapy-using-us-and-mri
#10
B Bednarz, W Culberson, M Bassetti, A McMillan, C Matrosic, A Shepard, J Zagzebski, S Smith, W Lee, D Mills, K Cao, B Wang, E Fiveland, R Darrow, T Foo
PURPOSE: To develop and validate a real-time motion management platform for radiotherapy that directly tracks tumor motion using ultrasound and MRI. This will be a cost-effective and non-invasive real-time platform combining the excellent temporal resolution of ultrasound with the excellent soft-tissue contrast of MRI. METHODS: A 4D planar ultrasound acquisition during the treatment that is coupled to a pre-treatment calibration training image set consisting of a simultaneous 4D ultrasound and 4D MRI acquisition...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046569/we-ab-207b-08-exploring-and-refining-the-quantec-guideline-to-reduce-severe-hyposalivation-following-imrt-for-head-and-neck-cancer
#11
M Thor, A Owosho, H Rosenburg, S Yom, J Oh, N Riaz, J Tsai, N Lee, J Huryn, C Estilo, J Deasy
PURPOSE: The aim of this study was to investigate the usefulness of the QUANTEC guideline to prevent xerostomia after intensity-modulated radiotherapy (IMRT) for head and neck cancer (HNC) with respect to follow-up time. In addition, we explored alternative guidelines to further reduce xerostomia. METHODS: The QUANTEC guideline suggests a mean dose to the contralateral (Dmeancontra) parotid<20 Gy, or Dmeancontra and Dmean to the ipsilateral parotid (Dmeanipsi)<25 Gy...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046283/su-f-r-04-radiomics-for-survival-prediction-in-glioblastoma-gbm
#12
H Zhang, J Molitoris, S Tan, I Giacomelli, D Scartoni, C Gzell, N Bhooshan, W Choi, W Lu, M Mehta, W D'Souza
PURPOSE: To develop a quantitative radiomics approach for survival prediction of glioblastoma (GBM) patients treated with chemoradiotherapy (CRT). METHODS: 28 GBM patients who received CRT at our institution were retrospectively studied. 255 radiomic features were extracted from 3 gadolinium-enhanced T1 weighted MRIs for 2 regions of interest (ROIs) (the surgical cavity and its surrounding enhancement rim). The 3 MRIs were at pre-treatment, 1-month and 3-month post-CRT...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27938440/a-multimodality-approach-to-sinonasal-undifferentiated-carcinoma-a-single-institute-experience
#13
S Bhasker, S Mallick, R Benson, V Bhanuprasad, A Sharma, A Thakar
BACKGROUND: Sinonasal undifferentiated carcinoma is a rare aggressive tumour arising from the Schneiderian epithelium lining the sinonasal tract. Although considered the cornerstone of therapy, surgical resection can only be performed in a limited number of patients. This report describes the experience of treating sinonasal undifferentiated carcinoma with a multimodality approach. METHOD: The treatment charts of sinonasal undifferentiated carcinoma patients treated at a tertiary care centre from 2004 to 2012 were retrospectively reviewed...
January 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/27891213/uk-guidelines-for-the-management-of-soft-tissue-sarcomas
#14
REVIEW
Adam Dangoor, Beatrice Seddon, Craig Gerrand, Robert Grimer, Jeremy Whelan, Ian Judson
Soft tissue sarcomas (STS) are rare tumours arising in mesenchymal tissues, and can occur almost anywhere in the body. Their rarity, and the heterogeneity of subtype and location means that developing evidence-based guidelines is complicated by the limitations of the data available. However, this makes it more important that STS are managed by teams, expert in such cases, to ensure consistent and optimal treatment, as well as recruitment to clinical trials, and the ongoing accumulation of further data and knowledge...
2016: Clinical Sarcoma Research
https://www.readbyqxmd.com/read/27886277/a-retrospective-analysis-on-two-week-short-course-pre-operative-radiotherapy-in-elderly-patients-with-resectable-locally-advanced-rectal-cancer
#15
Chen Shi, Hao Zhou, Xiaofan Li, Yong Cai
To validate that a two-week short-course pre-operative radiotherapy regimen is feasible, safe, and effective for the management of elderly patients with locally advanced rectal cancer (LARC), we retrospectively analyzed 99 radiotherapy-naive patients ≥70 years of age with LARC. Patients received pelvic radiation therapy (3D-CRT 30Gy/10f/2w) followed by TME surgery; some patients received adjuvant chemotherapy. The primary endpoint was OS, while the secondary endpoints were DFS, safety and response rate. The median follow-up time was 5...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27885876/predictors-and-survival-for-pathologic-tumor-response-grade-in-borderline-resectable-and-locally-advanced-pancreatic-cancer-treated-with-induction-chemotherapy-and-neoadjuvant-stereotactic-body-radiotherapy
#16
Eric A Mellon, William H Jin, Jessica M Frakes, Barbara A Centeno, Tobin J Strom, Gregory M Springett, Mokenge P Malafa, Ravi Shridhar, Pamela J Hodul, Sarah E Hoffe
BACKGROUND: Neoadjuvant therapy response correlates with survival in multiple gastrointestinal malignancies. To potentially augment neoadjuvant response for pancreas adenocarcinoma, we intensified treatment with stereotactic body radiotherapy (SBRT) following multi-agent chemotherapy. Using this regimen, we analyzed whether the College of American Pathology (CAP) tumor regression grade (TRG) at pancreatectomy correlated with established response biomarkers and survival. MATERIALS AND METHODS: We identified borderline resectable (BRPC) and locally advanced (LAPC) pancreatic cancer patients treated according to our institutional clinical pathway who underwent surgical resection with reported TRG (n = 81, median follow-up after surgery 24...
November 25, 2016: Acta Oncologica
https://www.readbyqxmd.com/read/27884182/operations-research-for-resource-planning-and-use-in-radiotherapy-a-literature-review
#17
Bruno Vieira, Erwin W Hans, Corine van Vliet-Vroegindeweij, Jeroen van de Kamer, Wim van Harten
BACKGROUND: The delivery of radiotherapy (RT) involves the use of rather expensive resources and multi-disciplinary staff. As the number of cancer patients receiving RT increases, timely delivery becomes increasingly difficult due to the complexities related to, among others, variable patient inflow, complex patient routing, and the joint planning of multiple resources. Operations research (OR) methods have been successfully applied to solve many logistics problems through the development of advanced analytical models for improved decision making...
November 25, 2016: BMC Medical Informatics and Decision Making
https://www.readbyqxmd.com/read/27870878/3d-vmat-verification-based-on-monte-carlo-log-file-simulation-with-experimental-feedback-from-film-dosimetry
#18
A R Barbeiro, A Ureba, J A Baeza, R Linares, M Perucha, E Jiménez-Ortega, S Velázquez, J C Mateos, A Leal
A model based on a specific phantom, called QuAArC, has been designed for the evaluation of planning and verification systems of complex radiotherapy treatments, such as volumetric modulated arc therapy (VMAT). This model uses the high accuracy provided by the Monte Carlo (MC) simulation of log files and allows the experimental feedback from the high spatial resolution of films hosted in QuAArC. This cylindrical phantom was specifically designed to host films rolled at different radial distances able to take into account the entrance fluence and the 3D dose distribution...
2016: PloS One
https://www.readbyqxmd.com/read/27868328/long-term-outcome-of-the-adjustable-transobturator-male-system-atoms-results-of-a-european-multicentre-study
#19
Alexander Friedl, Sandra Mühlstädt, Roman Zachoval, Alessandro Giammò, Danijel Kivaranovic, Maximilian Rom, Paolo Fornara, Clemens Brössner
OBJECTIVE: To evaluate the long-term effectiveness and safety of the adjustable transobturator male system (ATOMS(®) , Agency for Medical Innovations A.M.I., Feldkirch, Austria) in a European-wide multicentre setting. PATIENTS AND METHODS: In all, 287 men with stress urinary incontinence (SUI) were treated with the ATOMS device between June 2009 and March 2016. Continence parameters (daily pad test/pad use), urodynamics (maximum urinary flow rate, voiding volume, residual urine), and pain/quality of life (QoL) ratings (visual analogue scale/Leeds Assessment of Neuropathic Symptoms and Signs, International Consultation on Incontinence Questionnaire-Short Form [ICIQ-SF]/Patient Global Impression of Improvement [PGI-I]) were compared preoperatively and after intermediate (12 months) as well as after individual maximum follow-up...
November 21, 2016: BJU International
https://www.readbyqxmd.com/read/27785427/adjuvant-radiotherapy-for-pathological-high-risk-muscle-invasive-bladder-cancer-time-to-reconsider
#20
REVIEW
Paul Sargos, Brian C Baumann, Libni J Eapen, Amit Bahl, Vedang Murthy, Guilhem Roubaud, Mathieu Orré, Jason A Efstathiou, Shahrokh Shariat, Stephane Larré, Pierre Richaud, John P Christodouleas
Radical cystectomy with extended pelvic lymph-node dissection, associated with neo-adjuvant chemotherapy, remains the standard of care for advanced, non-metastatic muscle-invasive bladder cancer (MIBC). Loco-regional control is a key factor in the outcome of patients since it is related to overall survival (OS), disease-free survival (DFS) and cause-specific survival. The risk of loco-regional recurrence (LRR) is correlated to pathological factors as well as the extent of the lymphadenectomy. In addition, neither pre- nor post-operative chemotherapy have shown a clear impact on LRR-free survival...
October 2016: Translational Andrology and Urology
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