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https://www.readbyqxmd.com/read/28209443/continued-benefit-to-rectal-separation-for-prostate-radiation-therapy-final-results-of%C3%A2-a%C3%A2-phase-iii-trial
#1
Daniel A Hamstra, Neil Mariados, John Sylvester, Dhiren Shah, Lawrence Karsh, Richard Hudes, David Beyer, Steven Kurtzman, Jeffrey Bogart, R Alex Hsi, Michael Kos, Rodney Ellis, Mark Logsdon, Shawn Zimberg, Kevin Forsythe, Hong Zhang, Edward Soffen, Patrick Francke, Constantine Mantz, Peter Rossi, Theodore DeWeese, Stephanie Daignault-Newton, Benjamin W Fischer-Valuck, Anupama Chundury, Hiram Gay, Walter Bosch, Jeff Michalski
PURPOSE: SpaceOAR, a Food and Drug Administration-approved hydrogel intended to create a rectal-prostate space, was evaluated in a single-blind phase III trial of image guided intensity modulated radiation therapy. A total of 222 men were randomized 2:1 to the spacer or control group and received 79.2 Gy in 1.8-Gy fractions to the prostate with or without the seminal vesicles. The present study reports the final results with a median follow-up period of 3 years. METHODS AND MATERIALS: Cumulative (Common Terminology Criteria for Adverse Events, version 4...
December 23, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28203370/abdominal-adhesions-a-practical-review-of-an-often-overlooked-entity
#2
REVIEW
N Tabibian, E Swehli, A Boyd, A Umbreen, J H Tabibian
Formation of intra-abdominal adhesions is a common consequence of abdomino-pelvic surgery, radiation therapy, and inflammatory processes. In a small but clinically significant proportion of patients, adhesive disease may develop, wherein adhesions lead to a variety of chronic symptoms such as abdominal distension, pain, nausea, and abnormal bowel movement pattern which can be daily, intermittent, or episodic. Due to the chronic and troublesome nature of these symptoms, adhesive disease may be life-altering in many patients, particularly when not recognized and appropriately addressed, as is the case not infrequently...
March 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28185689/imaging-of-acute-pelvic-pain-in-girls-ovarian-torsion-and-beyond-%C3%A2
#3
REVIEW
Lena Naffaa, Tejaswini Deshmukh, Shanthan Tumu, Chris Johnson, Kevin P Boyd, Arthur B Meyers
: Identifying the etiology of acute pelvic pain in girls is often clinically challenging. Particularly in young girls, it is often difficult to determine if acute pelvic symptoms are originating from a gynecologic source or from a genitourinary or gastrointestinal etiology based on the child's clinical examination alone. Therefore, imaging plays a key role in establishing a diagnosis and in directing medical and surgical treatment. Pediatric gynecologic conditions, which can present acutely with pain or mass or both include ovarian torsion, hematometrocolpos, pelvic inflammatory disease, inguinal hernias containing an ovary or the uterus or both, adnexal cysts, pregnancy, vaginal foreign bodies, and ovarian vein thrombosis...
December 21, 2016: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28160269/infections-in-cancer-patients-with-solid-tumors-a-review
#4
REVIEW
Kenneth V I Rolston
Solid tumors are much more common than hematologic malignancies. Although severe and prolonged neutropenia is uncommon, several factors increase the risk of infection in patients with solid tumors, and the presence of multiple risk factors in the same patient is not uncommon. These include obstruction (most often caused by progression of the tumor), disruption of natural anatomic barriers such as the skin and mucosal surfaces, and treatment-related factors such as chemotherapy, radiation, diagnostic and/or therapeutic surgical procedures, and the increasing use of medical devices such as various catheters, stents, and prostheses...
February 3, 2017: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/28159930/compared-planning-dosimetry-of-tomo-vmat-and-imrt-in-rectal-cancer-with-different-simulated-positions
#5
Jang-Chun Lin, Jo-Ting Tsai, Li-Jhen Chen, Ming-Hsien Li, Wei-Hsiu Liu
OBJECTIVES: To compare treatment plans for helical tomotherapy (TOMO), volumetric modulated arc therapy (VMAT) and intensity-modulated radiotherapy (IMRT) for locally advanced rectal cancer (LARC). MATERIALS AND METHODS: This retrospective study from December 2010 to June 2013 included 20 patients with LARC who received neoadjuvant concurrent chemoradiotherapy (CCRT) with radiation doses of greater than 50.4 Gy. Dosimetric quality was evaluated based on doses to organs at risk (OARs), including small bowel, urinary bladder and bilateral femoral head, over the same coverage of the clinical target volume (CTV)...
January 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28158314/identifying-radiation-induced-survivorship-syndromes-affecting-bowel-health-in-a-cohort-of-gynecological-cancer-survivors
#6
Gunnar Steineck, Viktor Skokic, Fei Sjöberg, Cecilia Bull, Eleftheria Alevronta, Gail Dunberger, Karin Bergmark, Ulrica Wilderäng, Jung Hun Oh, Joseph O Deasy, Rebecka Jörnsten
BACKGROUND: During radiotherapy unwanted radiation to normal tissue surrounding the tumor triggers survivorship diseases; we lack a nosology for radiation-induced survivorship diseases that decrease bowel health and we do not know which symptoms are related to which diseases. METHODS: Gynecological-cancer survivors were followed-up two to 15 years after having undergone radiotherapy; they reported in a postal questionnaire the frequency of 28 different symptoms related to bowel health...
2017: PloS One
https://www.readbyqxmd.com/read/28129973/acute-toxicity-and-its-dosimetric-correlates-for-high-risk-prostate-cancer-treated-with-moderately-hypofractionated-radiotherapy
#7
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...
January 24, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28110975/a-prospective-study-of-health-related-quality-of-life-outcomes-for-patients-with-low-risk-prostate-cancer-managed-by-active-surveillance-or-radiation-therapy
#8
John S Banerji, Lauren M Hurwitz, Jennifer Cullen, Erika M Wolff, Katherine E Levie, Inger L Rosner, Timothy C Brand, James O LʼEsperance, Joseph R Sterbis, Christopher R Porter
INTRODUCTION: Patients with low-risk prostate cancer (PCa) often have excellent oncologic outcomes. However, treatment with curative intent can lead to decrements in health-related quality of life (HRQoL). Patients treated with radical prostatectomy have been shown to suffer declines in urinary and sexual HRQoL as compared to those managed with active surveillance (AS). Similarly, patients treated with external-beam radiation therapy (EBRT) are hypothesized to experience greater declines in bowel HRQoL...
January 19, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28105159/small-bowel-metastasis-from-pancreatic-cancer-in-a-long-term-survival-patient-with-synchronous-advanced-malignant-pleural-mesothelioma-a-case-report-and-literature-review
#9
Morena Fasano, Carminia Maria Della Corte, Giovanni Vicidomini, Valerio Scotti, Pier Francesco Rambaldi, Alfonso Fiorelli, Marina Accardo, Ferdinando De Vita, Mario Santini, Fortunato Ciardiello, Floriana Morgillo
Diffuse malignant pleural mesothelioma (MPM) is an aggressive tumor that originates from the surface of the pleura. Approximately 70% of cases are associated with chronic asbestos exposure. MPM is regarded as an incurable disease, with a median survival of ~2 years following intensive multimodality treatment. Pancreatic cancer is a malignancy also associated with a poor prognosis, with only 2% of patients surviving for 5 years. The majority of patients with pancreatic cancer are diagnosed with an advanced stage of disease and experience a poor response to therapy...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28091700/computed-tomography-localization-of-the-appendix-in-the-pediatric-population-relative-to-the-lumbar-spine
#10
John Davis, Albert T Roh, Matthew B Petterson, Tammy R Kopelman, Samantha L Matz, Daniel G Gridley, Mary J Connell
BACKGROUND: Computed tomography (CT) is commonly used to evaluate suspected acute appendicitis. Although very effective, CT uses ionizing radiation, exposing patients to an increased risk of cancer. OBJECTIVE: This study assessed the potential for decreasing the field of view of the CT (and therefore the dose to the patient) in the evaluation of suspected acute appendicitis in children. MATERIALS AND METHODS: This study was a retrospective review of prospectively collected data from 212 consecutive patients who underwent CT for suspected acute appendicitis...
January 14, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28086825/toxicity-and-quality-of-life-report-of-a-phase-ii-study-of-stereotactic-body-radiotherapy-sbrt-for-low-and-intermediate-risk-prostate-cancer
#11
Matthew J Boyer, Michael A Papagikos, Rex Kiteley, Zeljko Vujaskovic, Jackie Wu, W Robert Lee
BACKGROUND: Clinical data indicates that delivery of larger daily doses of radiation may improve the therapeutic ratio for prostate cancer compared to conventional fractionation. A phase II study of stereotactic body radiotherapy with real-time motion management and daily plan re-optimization for low to intermediate risk prostate cancer was undertaken to evaluate this hypothesis. This report details the toxicity and quality of life following treatment. METHODS: From 2009 to 2013, 60 patients with T1-T2c prostate cancer with a Gleason score of 6 and PSA ≤ 15 or Gleason score of 7 and PSA ≤ 10 were enrolled...
January 13, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28057090/-ct-guidance-125-i-seed-implantation-for-pelvic-recurrent-rectal-cancer-assisted-by-3d-printing-individual-non-coplanar-template
#12
H Wang, J J Wang, Y L Jiang, S Q Tian, Z Ji, F X Guo, H T Sun, J H Fan, Y P Xu
Objective: To analyze the difference of dosimetric parameters between pre-plan and post-plan of (125)I radioactive seed implantation assisted by 3D printing individual non-coplanar template (3D printing template) for locally recurrent rectal cancer (LRRC). Methods: From February 2016 to April 2016, a total of 10 patients with locally recurrent rectal cancer received (125)I seeds implantation under CT guidance assisted by 3D printing template in Department of Radiation Oncology, Peking University Third Hospital...
December 20, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28049025/correction-of-vitamin-d-deficiency-using-sublingually-administered-vitamin-d2-in-a-crohn-s-disease-patient-with-mal-absorption-and-a-new-ileostomy
#13
REVIEW
Patrick McCullough, Robert Heaney
Vitamin D deficiency has been shown to be associated with many adverse health problems. Studies have shown that patients with Crohn's disease who have low vitamin D levels have a poorer quality of life than those with more adequate levels. It has also been shown that patients with mal-absorption problems have a difficult time achieving normal vitamin D levels in spite of aggressive supplementation, and that exposure to UVB radiation may be the most effective treatment option for these patients. We present a case in which 25-hydroxyvitamin D levels were normalized within 2 weeks in a severely vitamin D deficient patient with Crohn's disease with mal-absorption and a new ileostomy, utilizing sublingually administered vitamin D2...
December 31, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28048910/su-g-jep2-10-on-the-need-for-a-dynamic-model-for-patient-specific-distortion-corrections-for-mr-only-pelvis-treatment-planning
#14
C Glide-Hurst, W Zheng, C Stehning, S Weiss, S Renisch
PURPOSE: Patient-specific distortions, particularly near tissue/air interfaces, require assessment and possible corrections for MRI-only radiation treatment planning (RTP). However, patients are dynamic due to changes in physiological status and motion during imaging sessions. This work investigated the need for dynamic patient-specific distortion corrections to support pelvis MR-only RTP. METHODS: The pelvises of healthy volunteers were imaged at 1.0T, 1.5T, and 3...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048479/we-ab-207b-01-dose-tolerance-for-sbrt-sabr
#15
J Grimm
PURPOSE: Stereotactic body radiation therapy (SBRT) / stereotactic ablative body radiotherapy (SABR) is gaining popularity, but quantitative dose tolerance has still been lacking. To improve this, the April 2016 issue of Seminars in Radiation Oncology will have normal tissue complication probability (NTCP) models for 10 critical structures: optic pathway, cochlea, oral mucosa, esophagus, chestwall, aorta, bronchi, duodenum, small bowel, and spinal cord. METHODS: The project included more than 1500 treatments in 1-5 fractions using CyberKnife, Gamma Knife, or LINAC, with 60 authors from 15 institutions...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047827/su-c-204-01-a-dosimetric-investigation-into-the-effects-of-yttrium-90-radioembolization-on-the-gi-tract-in-vivo-and-histological-analysis-in-an-animal-model
#16
A Pasciak, L Nodit, A Bourgeois, B Paxton, A Arepally, Y Bradley
PURPOSE: In Yttrium-90 (90Y) radioembolization, non-target embolization (NTE) to the stomach or small bowel can result in ulceration, a rare but difficult to manage clinical complication. However, dosimetric thresholds for toxicity to these tissues from radioembolization have never been evaluated in a controlled setting. We performed an analysis of the effect of 90Y radioembolization in a porcine model at different absorbed-dose endpoints. METHODS: Under approval of the University of Tennessee IACUC, 6 female pigs were included in this study...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047756/we-ab-207b-09-margin-reduction-for-planning-target-volume-ptv-in-patients-with-localized-prostate-cancer-impact-on-delivered-dose-and-quality-of-life
#17
A Kumarasiri, C Liu, S Brown, C Glide-Hurst, M Elshaikh, I Chetty, B Movsas
PURPOSE: To estimate the delivered (cumulative) dose to targets and organs at risk for localized prostate cancer patients treated with reduced PTV margins and to evaluate preliminary patient reported quality-of-life (QOL). METHODS: Under an IRB-approved protocol, 20 prostate cancer patients (including 11 control patients) were treated with reduced planning margins (5 mm uniform with 4 mm at prostate/rectum interface). Control patients had standard margin (10/6 mm)-based treatments...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047083/su-c-bra-01-interactive-auto-segmentation-for-bowel-in-online-adaptive-mri-guided-radiation-therapy-by-using-a-multi-region-labeling-algorithm
#18
Y Lu, I Chen, R Kashani, H Wan, N Maughan, D Muccigrosso, P Parikh
PURPOSE: In MRI-guided online adaptive radiation therapy, re-contouring of bowel is time-consuming and can impact the overall time of patients on table. The study aims to auto-segment bowel on volumetric MR images by using an interactive multi-region labeling algorithm. METHODS: 5 Patients with locally advanced pancreatic cancer underwent fractionated radiotherapy (18-25 fractions each, total 118 fractions) on an MRI-guided radiation therapy system with a 0.35 Tesla magnet and three Co-60 sources...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046785/su-f-j-173-online-replanning-for-dose-painting-based-on-changing-adc-map-of-pancreas-cancer
#19
O Ates, E Ahunbay, B Erickson, X Li
PURPOSE: The introduction of MR-guided radiation therapy (RT), e.g., MR-Linac, would allow dose painting to adapt spatial RT response revealed from MRI data during the RT delivery. The purpose of this study is to investigate the use of an online replanning method to adapt dose painting from the MRI Apparent Diffusion Coefficient (ADC) map acquired during the delivery of RT for pancreatic cancers. METHODS: Original dose painting plans were created based on multi-parametric simulation MRI including T1, T2 and ADC, using a treatment planning system (MONACO, Elekta) equipped with an online replanning algorithm (WSO, warm start optimization)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046532/su-f-t-433-evaluation-of-a-new-dose-mimicking-application-for-clinical-flexibility-and-reliability
#20
D Hoffman, C Kumaran Nair, C Wright, T Yamamoto, J Mayadev, R Valicenti, S Benedict, J Markham, Y Rong
PURPOSE: Clinical workflow and machine down time occasionally require patients to be temporarily treated on a system other than the initial treatment machine. A new commercial dose mimicking application provides automated cross-platform treatment planning to expedite this clinical flexibility. The aim of this work is to evaluate the feasibility of automatic plan creation and establish a robust clinical workflow for prostate and pelvis patients. METHODS: Five prostate and five pelvis patients treated with helical plans were selected for re-planning with the dose mimicking application, covering both simple and complex scenarios...
June 2016: Medical Physics
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