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https://www.readbyqxmd.com/read/29330865/a-case-of-radiation-induced-osteosarcoma-of-the-skull-presenting-as-a-cutaneous-epidermotropic-tumour-with-a-short-latent-period
#1
E Rashidghamat, E Calonje
Radiation induced sarcoma is an unusual but well documented tumor. The frequency of radiation induced sarcoma of the head and neck region has been reported as 0.143%. In the literature the median interval between irradiation and development of sarcoma is 11 years. Cases of RIS with a short latent period i.e. less than four years are rare. We report a case of a 34 year-old female who developed an osteosarcoma of the scalp, over a previous craniotomy scar, three years after excision of a frontal anaplastic oligodendroglioma which had been followed by a course of 6 weeks radiotherapy (58 Gy) and 6 cycles of Temozolomide...
January 13, 2018: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29321610/physiological-effects-of-short-acute-uvb-treatments-in-chenopodium-quinoa-willd
#2
Thais Huarancca Reyes, Andrea Scartazza, Antonella Castagna, Eric G Cosio, Annamaria Ranieri, Lorenzo Guglielminetti
Increased ultraviolet B (UVB) radiation due to global change can affect plant growth and metabolism. Here, we evaluated the capacity of quinoa to resist under short acute UVB irradiation. Quinoa was daily exposed for 30 or 60 min to 1.69 W m-2 UVB. The results showed that 30 min exposure in 9 d-course did not cause severe alterations on photosynthetic pigments and flavonoids, but a significant increase of antioxidant capacity was observed. Otherwise, 60 min UVB in 5 d-course reduced almost all these parameters except for an increase in the de-epoxidation of xanthophyll cycle pigments and led to the death of the plants...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29299359/short-course-radiation-as-a-component-of-definitive-multidisciplinary-treatment-for-select-patients-with-metastatic-rectal-adenocarcinoma
#3
Emma B Holliday, Andrew Hunt, Y Nancy You, George J Chang, John M Skibber, Miguel A Rodriguez-Bigas, Brian K Bednarski, Cathy Eng, Eugene J Koay, Bruce D Minsky, Cullen Taniguchi, Sunil Krishnan, Joseph M Herman, Prajnan Das
Background: Select patients with rectal adenocarcinoma with metastatic disease at presentation can be cured with multimodality management. However, the optimal components and sequencing of therapy is unknown. The aim of this study is to evaluate outcomes for patients treated with chemotherapy, short course radiation therapy (SCRT) and surgical resection. Methods: Patients with newly diagnosed metastatic rectal adenocarcinoma who received SCRT from 2010-2016 were identified...
December 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/29280457/reirradiation-for-recurrent-pediatric-central-nervous-system-malignancies-a-multi-institutional-review
#4
Avani D Rao, Arif S Rashid, Qinyu Chen, Rosangela C Villar, Daria Kobyzeva, Kristina Nilsson, Karin Dieckmann, Alexey Nechesnyuk, Ralph Ermoian, Sara Alcorn, Shannon M MacDonald, Matthew M Ladra, Eric C Ford, Brian A Winey, Maria Luisa S Figueiredo, Michael J Chen, Stephanie A Terezakis
PURPOSE: Reirradiation has been proposed as an effective modality for recurrent central nervous system (CNS) malignancies in adults. We evaluated the toxicity and outcomes of CNS reirradiation in pediatric patients. METHODS AND MATERIALS: The data from pediatric patients <21 years of age at the initial diagnosis who developed a recurrent CNS malignancy that received repeat radiation therapy (RT) across 5 facilities in an international pediatric research consortium were retrospectively reviewed...
November 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29248399/palliative-chemoradiotherapy-versus-radiotherapy-alone-for-dysphagia-in-advanced-oesophageal-cancer-a-multicentre-randomised-controlled-trial-trog-03-01
#5
Michael G Penniment, Paolo B De Ieso, Jennifer A Harvey, Sonya Stephens, Heather-Jane Au, Christopher J O'Callaghan, Andrew Kneebone, Samuel Y Ngan, Iain G Ward, Rajarshi Roy, Jennifer G Smith, Tirath Nijjar, James J Biagi, Liam A Mulroy, Rebecca Wong
BACKGROUND: A short course of radiotherapy is commonly prescribed for palliative relief of malignant dysphagia in patients with incurable oesophageal cancer. We compared chemoradiotherapy with radiotherapy alone for dysphagia relief in the palliative setting. METHODS: This multicentre randomised controlled trial included patients with advanced or metastatic oesophageal cancer who were randomly assigned (1:1) through a computer-generated adaptive biased coin design to either palliative chemoradiotherapy or radiotherapy alone for treatment of malignant dysphagia at 22 hospitals in Australia, Canada, New Zealand, and the UK...
December 13, 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29222306/therapy-of-primary-cns-lymphoma-role-of-intensity-radiation-and-novel-agents
#6
REVIEW
Andrés José María Ferreri
Primary central nervous system (CNS) lymphomas represent a subgroup of malignancies with specific characteristics, an aggressive course, and unsatisfactory outcome in contrast with other lymphomas comparable for tumor burden and histological type. Despite the high sensitivity to conventional chemotherapy and radiotherapy, remissions are frequently short lasting. Treatment efficacy is limited by several factors, including the biology and microenvironment of this malignancy and the "protective" effect of the blood-brain barrier, which limits the access of most drugs to the CNS...
December 8, 2017: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/29203973/long-term-functional-and-oncological-outcomes-following-intersphincteric-resection-for-low-rectal-cancers
#7
Sivakumar Mahalingam, Ramakrishnan Ayloor Seshadri, Surendran Veeraiah
Surgery for low rectal cancer often involves a permanent stoma. Intersphincteric resection (ISR) with colo-anal anastomosis is a valuable sphincter sparing surgical procedure that avoids the need for permanent stoma in patients with low rectal cancer. The aim of this study was to analyze the long-term functional and oncological outcomes following ISR. This was a retrospective analysis of patients with low rectal cancer who underwent ISR with colo-anal anastomosis in our institution between 2007 and 2015. All patients had a diversion stoma...
December 2017: Indian Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29184473/neoadjuvant-treatment-strategies-advanced-radiation-alternatives
#8
REVIEW
Bruce D Minsky
Long-course chemoradiation therapy (CRT) has been the standard approach for locally advanced rectal tumors. Neoadjuvant CRT is associated to improved local disease control, with less toxicity when compared with adjuvant CRT, as well as the chance for pathologic complete response. The CRT regimens have improved over the past years. This article will examine selected controversies, including novel chemoradiation regimens, duration of radiation (short vs. long course), and radiation techniques such as intensity-modulated radiation therapy (IMRT)...
November 2017: Clinics in Colon and Rectal Surgery
https://www.readbyqxmd.com/read/29156895/survival-analysis-of-malignant-epidural-spinal-cord-compression-after-palliative-radiotherapy-using-tokuhashi-scoring-system-and-the-impact-of-systemic-therapy
#9
Wing Ho Mui, Tai Chung Lam, Frank Chi Sing Wong, Wing King Sze
BACKGROUND: Previous studies have shown similar clinical outcomes of both single and multi-fraction (Fr) radiation therapy among malignant epidural spinal cord compression (MSCC) patients with poor prognosis; whereas, patients expected to have longer survival may require long-course radiotherapy to prevent local failure. However, such a poor prognosis risk group has not yet been clearly identified for use in daily clinical practice. We examined if the known predictive Tokuhashi scoring system could be adapted in MSCC patients treated with palliative radiation therapy...
August 29, 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/29143930/photovoltaic-cell-electrical-heating-system-for-removing-snow-on-panel-including-verification
#10
Agnes Weiss, Helmut Weiss
Small photovoltaic plants in private ownership are typically rated at 5 kW (peak). The panels are mounted on roofs at a decline angle of 20° to 45°. In winter time, a dense layer of snow at a width of e.g., 10 cm keeps off solar radiation from the photovoltaic cells for weeks under continental climate conditions. Practically, no energy is produced over the time of snow coverage. Only until outside air temperature has risen high enough for a rather long-time interval to allow partial melting of snow; the snow layer rushes down in an avalanche...
November 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29124955/current-issues-of-preoperative-radio-chemo-therapy-and-its-future-evolution-in-locally-advanced-rectal-cancer
#11
Bin Ma, Qingzhou Xu, Yongxi Song, Peng Gao, Zhenning Wang
Neoadjuvant therapies are effective for local control and tumor downstaging. Up to date, preoperative long-course chemoradiotherapy and short-course radiotherapy are the two primary guideline-recommended neoadjuvant therapies for locally advanced rectal cancer patients. However, clinicians throughout the world are trying their best to further optimize the regimens and concepts of neoadjuvants. Hence, there is an urgent need to summarize evidence regarding indications of neaoadjuvant therapies and relative merits of current standard regimens...
November 2017: Future Oncology
https://www.readbyqxmd.com/read/29114607/the-impact-of-different-stereotactic-radiation-therapy-regimens-for-brain-metastases-on-local-control-and-toxicity
#12
Rachel B Jimenez, Brian M Alexander, Anand Mahadevan, Andrzej Niemierko, Selvan Rajakesari, Nils D Arvold, Scott R Floyd, Kevin S Oh, Jay S Loeffler, Helen A Shih
Purpose: Stereotactic radiation therapy (SRT) enables focused, short course, high dose per fraction radiation delivery to brain tumors that are less ideal for single fraction treatment because of size, shape, or close proximity to sensitive structures. We sought to identify optimal SRT treatment regimens for maximizing local control while minimizing morbidity. Methods and materials: We performed a retrospective review of patients treated with SRT for solid brain metastases using variable dose schedules between 2001 and 2011 at 3 academic hospitals...
July 2017: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/29114597/neoadjuvant-twice-daily-chemoradiotherapy-for-esophageal-cancer-treatment-related-mortality-and-long-term-outcomes
#13
Stuart E Samuels, Matthew H Stenmark, Jae Y Lee, Jonathan B McHugh, James A Hayman, Mark B Orringer, Susan G Urba, Libin Sun, Congying Xie, Feng-Ming Kong, Kyle C Cuneo
Objective: Because of the short potential doubling time of esophageal cancer, there is a theoretical benefit to using an accelerated radiation treatment schedule. This study evaluates outcomes and treatment-related mortality and morbidity of patients treated with neoadjuvant hyperfractionated accelerated chemoradiation for resectable esophageal cancer. Methods and materials: Outcomes from 250 consecutive patients with resectable esophageal cancer treated with preoperative hyperfractionated accelerated chemoradiotherapy (45 Gy in 30 twice-daily fractions over 3 weeks) followed by planned transhiatal esophagectomy were analyzed...
July 2017: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/29034307/uterine-clostridium-perfringens-infection-related-to-gynecologic-malignancy
#14
Kevin M Kremer, Megan E McDonald, Michael J Goodheart
Uterine gas gangrene caused by Clostridium perfringens is a serious, often life-threatening infection that is rarely encountered in the practice of gynecologic oncology. However, the hypoxic nature of gynecologic cancers due to necrosis and/or prior radiation therapy creates a microenvironment optimal for proliferation of anaerobic bacteria such as the Clostridium species. Early recognition and aggressive treatment with IV antibiotics and surgical debridement remain the cornerstones of management in order to decrease morbidity and mortality...
November 2017: Gynecologic Oncology Reports
https://www.readbyqxmd.com/read/29032962/the-impact-of-postoperative-complications-on-health-related-quality-of-life-in-older-patients-with-rectal-cancer-a-prospective-cohort-study
#15
Alice M Couwenberg, Fleur S A de Beer, Martijn P W Intven, Johannes P M Burbach, Anke B Smits, Esther C J Consten, Anandi H W Schiphorst, Niels A T Wijffels, Marnix A J de Roos, Marije E Hamaker, Wilhemina M U van Grevenstein, Helena M Verkooijen
OBJECTIVES: As result of the aging population and increasing rectal cancer incidence, more older patients undergo treatment for rectal cancer. This study compares treatment course, postoperative complications, and quality of life (QOL) between older and younger patients with rectal cancer and evaluates the impact of postoperative complications on QOL in the elderly. MATERIALS AND METHODS: Patients with rectal cancer participating in a prospective colorectal cancer cohort and referred for radiotherapy between 2013 and 2016 were included...
October 9, 2017: Journal of Geriatric Oncology
https://www.readbyqxmd.com/read/29029888/reirradiation-using-permanent-interstitial-brachytherapy-a-potentially-durable-technique-for-salvaging-recurrent-pelvic-malignancies
#16
Jonathan Feddock, Dennis Cheek, Cole Steber, Jason Edwards, Stacey Slone, Wei Luo, Marcus Randall
PURPOSE: To present a time-to-failure (TTF) analysis for all patients treated with permanent interstitial brachytherapy (PIB) at our institution, with additional analyses to correlate successful reirradiation and to identify the frequency of severe grade 3 to 4 toxicity. METHODS AND MATERIALS: Forty-two previously irradiated patients received curative or palliative intent PIB for a recurrent pelvic malignancy between January 2009 and August 2016. Minimum follow-up was 6 months after the PIB procedure...
August 26, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29019894/randomized-controlled-trial-of-late-course-concurrent-versus-sequential-chemoradiotherapy-after-mastectomy-and-axillary-surgery-in-locally-advanced-breast-cancer
#17
RANDOMIZED CONTROLLED TRIAL
Ying Lu, Haixin Huang, Hui Yang, Dagui Chen
BACKGROUND: Concurrent chemoradiotherapy could increase the local control rate in patients with high recurrence risk after breast-conserving surgery, but the effect of concurrent chemoradiotherapy after mastectomy and axillary dissection is not clear. The aim of the study was to compare the effects of late-course concurrent chemoradiotherapy (CCRT) versus sequential therapy (SCRT) after mastectomy and axillary surgery in locally advanced breast cancer. METHODS: This was a randomized controlled trial of 155 patients with stage pT3-4p N1-3c M0 or pAnyT pN2-3c M0 breast cancer undergoing 5-fluorouracil+epirubicin+cyclophosphamide followed by docetaxel (FEC-D) chemotherapy after mastectomy and axillary dissection...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28987136/radiation-therapy-and-early-breast-cancer-current-controversies
#18
REVIEW
John Boyages
Radiation therapy (RT) is an important component of breast cancer treatment. RT reduces local recurrence and breast cancer mortality after breast conservation for all patients and for node-positive patients after a mastectomy. Short courses of RT over 3-4 weeks are generally as effective as longer courses. A patient subgroup where RT can be avoided after conservative surgery has not been consistently identified. A radiation boost reduces the risk of a recurrence in the breast but may be omitted for older patients with good prognosis tumours with clear margins...
August 4, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28947986/preoperative-short-vs-long-course-chemoradiotherapy-with-delayed-surgery-for-locally-advanced-rectal-cancer
#19
Mi Joo Chung, Dong Wook Kim, Weon Kuu Chung, Suk Hwan Lee, Seung-Kyu Jeong, Jae Kwan Hwang, Choon Sik Jeong
PURPOSE: To compare the clinical outcomes between short-course chemoradiotherapy (CRT) and long-course CRT with delayed surgery in locally advanced rectal cancer patients. RESULTS: From 2010 to 2015, 19 patients were treated with short-course CRT and 53 patients were treated with LCRT. The sphincter-saving rate (89.5% vs. 94.3%, short-course CRT vs. long-course CRT), pathologic complete remission (21.1% vs. 13.2%), downstaging (47.4% vs. 26.4%), and treatment complications including anastomotic site leakage, bowel adhesion, and hematologic toxicity associated with short-course CRT were not significantly different from those associated with long-course CRT...
September 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28923225/randomized-clinical-trials-in-colon-and-rectal-cancer
#20
REVIEW
Atif Iqbal, Thomas J George
Surgery remains the mainstay of treatment for colon and rectal cancers. Colon cancer outcomes have improved with laparoscopic techniques, enhanced recovery pathways, and adjuvant chemotherapy. Adjuvant 5-fluorouracil with or without oxaliplatin in stage III and possibly high-risk stage II colon cancer is associated with improved survival. Multimodality management of rectal cancer continues to evolve; total mesorectal excision is the cornerstone. Oncologic results do not support the use of laparoscopic resection in rectal cancer...
October 2017: Surgical Oncology Clinics of North America
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