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Sarcoma radiotherapy

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https://www.readbyqxmd.com/read/28732326/therapeutic-applications-of-histone-deacetylase-inhibitors-in-sarcoma
#1
REVIEW
Fan Tang, Edwin Choy, Chongqi Tu, Francis Hornicek, Zhenfeng Duan
Sarcomas are a rare group of malignant tumors originating from mesenchymal stem cells. Surgery, radiation and chemotherapy are currently the only standard treatments for sarcoma. However, their response rates to chemotherapy are quite low. Toxic side effects and multi-drug chemoresistance make treatment even more challenging. Therefore, better drugs to treat sarcomas are needed. Histone deacetylase inhibitors (HDAC inhibitors, HDACi, HDIs) are epigenetic modifying agents that can inhibit sarcoma growth in vitro and in vivo through a variety of pathways, including inducing tumor cell apoptosis, causing cell cycle arrest, impairing tumor invasion and preventing metastasis...
July 6, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28725344/complete-response-of-mediastinal-clear-cell-sarcoma-to-pembrolizumab-with-radiotherapy
#2
Samuel Marcrom, Jennifer F De Los Santos, Robert M Conry
BACKGROUND: Clear cell sarcoma (CCS) is a rare, aggressive soft tissue sarcoma thought to derive from neural crest and characterized by a 12;22 translocation. The resulting fusion protein directly activates expression of the melanocyte master transcription factor and drives the same down-stream pathways in CCS and melanoma leading to significant clinical parallels between these malignancies. Striking success of immune checkpoint blockade in melanoma has promoted interest in immunotherapy of CCS...
2017: Clinical Sarcoma Research
https://www.readbyqxmd.com/read/28725250/adjuvant-radiotherapy-with-brachytherapy-boost-in-soft-tissue-sarcomas
#3
Annalisa Cortesi, Andrea Galuppi, Rezarta Frakulli, Alessandra Arcelli, Fabrizio Romani, Gian Carlo Mattiucci, Giuseppe Bianchi, Stefano Ferrari, Andrea Ferraro, Andrea Farioli, Marco Gambarotti, Alberto Righi, Gabriella Macchia, Francesco Deodato, Savino Cilla, Milly Buwenge, Vincenzo Valentini, Alessio Giuseppe Morganti, Davide Donati, Silvia Cammelli
PURPOSE: The standard primary treatment for soft tissue sarcoma (STS) is a wide surgical resection, preceded or followed by radiotherapy. Purpose of this retrospective study was to assess the efficacy of perioperative brachytherapy (BRT) plus postoperative external beam radiation therapy (EBRT) in patients with intermediate-high risk STS. MATERIAL AND METHODS: BRT delivered dose was 20 Gy. External beam radiation therapy was delivered with 3D-technique using multiple beams...
June 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/28717856/intraoperative-radiotherapy-for-extremity-soft-tissue-sarcomas-can-long-term-local-control-be-achieved
#4
Esther Carbó-Laso, Pablo Sanz-Ruiz, José Antonio Calvo-Haro, Miguel Cuervo-Dehesa, Rubén Pérez-Mañanes, Lydia Mediavilla-Santos, Coral Sánchez-Pérez, Ana Álvarez-González, Javier Vaquero-Martín
BACKGROUND: Intraoperative electron-beam radiation therapy (IOERT) during limb-sparing surgery has the advantage of delivering a single high boost dose to sarcoma residues and surgical bed area near to radiosensitive structures with limited toxicity. Retrospective studies have suggested that IOERT may improve local control compared to standard radiotherapy and we aimed to demonstrate this theory. Therefore, we performed an observational prospective study to determine (1) if it is possible to achieve high local control by adding IOERT to external-beam radiation therapy (EBRT) in extremity soft-tissue sarcomas (STS), (2) if it is possible to improve long-term survival rates, and (3) if toxicity could be reduced with IOERT MATERIALS AND METHODS: From 1995-2003, 39 patients with extremity STS were treated with IOERT and postoperative radiotherapy...
July 17, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28717396/intraoperative-radiotherapy-review-of-techniques-and-results
#5
REVIEW
Avinash Pilar, Meetakshi Gupta, Sarbani Ghosh Laskar, Siddhartha Laskar
Intraoperative radiotherapy (IORT) is a technique that involves precise delivery of a large dose of ionising radiation to the tumour or tumour bed during surgery. Direct visualisation of the tumour bed and ability to space out the normal tissues from the tumour bed allows maximisation of the dose to the tumour while minimising the dose to normal tissues. This results in an improved therapeutic ratio with IORT. Although it was introduced in the 1960s, it has seen a resurgence of popularity with the introduction of self-shielding mobile linear accelerators and low-kV IORT devices, which by eliminating the logistical issues of transport of the patient during surgery for radiotherapy or building a shielded operating room, has enabled its wider use in the community...
2017: Ecancermedicalscience
https://www.readbyqxmd.com/read/28716129/current-knowledge-on-feline-injection-site-sarcoma-treatment
#6
REVIEW
Katarzyna Zabielska-Koczywąs, Anna Wojtalewicz, Roman Lechowski
Feline injection-site sarcomas (FISS) are malignant skin tumours of mesenchymal origin, the treatment of which is a challenge for veterinary surgeons. The role of surgery, radiotherapy and chemotherapy in FISS treatment has been studied, and a correlation between "clean" surgical margins and disease-free survival has been shown. In addition, clean surgical margins are one of the most important factors for achieving a low recurrence rate. The most effective method of FISS treatment includes combining radical surgery with pre- or postoperative radiotherapy...
July 17, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28709534/margin-analysis-sarcoma-of-the-head-and-neck
#7
REVIEW
Raafat F Makary, Arun Gopinath, Michael R Markiewicz, Rui Fernandes
Head and neck sarcomas are rare but are associated with significant morbidity/mortality and management difficulties. These tumors are best managed in a multidisciplinary setting. Open or core biopsy is essential for histologic diagnosis and grading. Complete surgical tumor resection with negative margins at the first attempt is the best chance for potential cure. In most patients, except those with small resectable low-grade lesions, adjuvant radiotherapy and chemotherapy are added to maximize local control with variable results...
August 2017: Oral and Maxillofacial Surgery Clinics of North America
https://www.readbyqxmd.com/read/28707624/three-dimensional-3d-culture-in-sarcoma-research-and-the-clinical-significance
#8
Songtao Gao, Jacson Shen, Francis Hornicek, Zhenfeng Duan
Sarcomas are rare malignant tumors that arise from transformed cells of mesenchymal origin. Despite the progress in diagnosis and treatment, sarcomas have a high mortality rate due to local recurrence, metastasis, and the development of drug resistance to chemotherapy. New models for sarcoma research are required to further understand the disease and to develop new therapies. In vitro sarcoma modeling is challenging because of significant genetic heterogeneities, diverse pathological, and overlapping clinical characteristics...
July 14, 2017: Biofabrication
https://www.readbyqxmd.com/read/28698004/the-effect-of-radiotherapy-on-fat-content-and-fatty-acids-in-myxoid-liposarcomas-quantified-by-mri
#9
Mikael Skorpil, Henric Rydén, Johan Wejde, Elisabet Lidbrink, Otte Brosjö, Johan Berglund
BACKGROUND: Myxoid liposarcomas are highly radiosensitive. Consequently radiotherapy is often used pre-operatively to reduce tumor volume and lessen the post-operative deficit. In soft-tissue sarcomas therapy response is mainly evaluated using magnetic resonance imaging (MRI) and the fundamental criterion for a positive response is decreased tumor size. In myxoid liposarcomas an increased fat content is also known to occur as a response to radiotherapy. OBJECTIVE: To highlight the difficulties of MRI for therapy response evaluation in irradiated myxoid liposarcomas, by using MRI Dixon techniques enabling objective quantification of proton density fat fraction (%) and the number of double bonds (ndb; unsaturation degree) of fatty acids...
July 8, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28692129/distortion-free-diffusion-mri-using-an-mri-guided-tri-cobalt-60-radiotherapy-system-sequence-verification-and-preliminary-clinical-experience
#10
Yu Gao, Fei Han, Ziwu Zhou, Minsong Cao, Tania Kaprealian, Mitchell Kamrava, Chenyang Wang, John Neylon, Daniel A Low, Yingli Yang, Peng Hu
PURPOSE: Monitoring tumor response during the course of treatment and adaptively modifying treatment plan based on tumor biological feedback may represent a new paradigm for radiotherapy. Diffusion MRI has shown great promises in assessing and predicting tumor response to radiotherapy. However, the conventional diffusion-weighted single-shot echo-planar-imaging (DW-ssEPI) technique suffers from limited resolution, severe distortion and possibly inaccurate ADC at low field strength. The purpose of this work is to develop a reliable, accurate and distortion-free diffusion MRI technique that is practicable for longitudinal tumor response evaluation and adaptive radiotherapy on a 0...
July 10, 2017: Medical Physics
https://www.readbyqxmd.com/read/28687574/successful-treatment-of-recurrent-primitive-myxoid-mesenchymal-tumor-of-infancy-with-bcor-internal-tandem-duplication
#11
Stuart L Cramer, Rong Li, Siraj Ali, Julie A Bradley, Hee K Kim, Joseph G Pressey
Primitive myxoid mesenchymal tumor of infancy (PMMTI) is a rare tumor with <20 cases reported to date. Recently PMMTI tumors have been found to harbor BCOR internal tandem duplication (ITD), the same genetic alteration detected in clear cell sarcoma of the kidney (CCSK). Complete surgical resection of PMMTI is often curative, but no standard of care has been established for unresectable tumors. We describe a female patient who presented at 13 months of age with a paraspinal mass and spinal cord compression...
July 2017: Journal of the National Comprehensive Cancer Network: JNCCN
https://www.readbyqxmd.com/read/28670073/ewing-s-sarcoma-of-the-trachea-in-an-adolescent-girl
#12
Jaisankar Puthusseri, Geetha Narayanan, T R Preethi, G Jayapriya
Primitive neuroectodermal tumors (PNET) are aggressive neoplasms of neuroectodermal origin. Although they are known to arise in a host of locations, involvement of the trachea has rarely been reported. We describe an adolescent girl who presented with stridor and was diagnosed with PNET of the trachea. She is in remission following treatment with combination chemotherapy and local radiotherapy.
July 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28659250/cutaneous-kaposi-sarcoma-during-treatment-with-superpotent-topical-steroids-and-methotrexate-for-bullous-pemphigoid-three-cases
#13
Raphaëlle Binois, Marion Nadal, Eric Esteve, Anne De Muret, Rémy Kerdraon, Tarik Gheit, Massimo Tommasino, Pauline Gaboriaud, Antoine Touze, Mahtab Samimi
Iatrogenic Kaposi sarcoma (KS) has previously been reported in patients with bullous pemphigoid (BP), in relation to systemic steroids. To report three cases of previously unreported cutaneous KS during treatment with superpotent topical steroids (STS) and methotrexate (MTX). All patients were elderly men with BP treated with STS for 2 to 32 months (cumulative doses: 2,700-9,150 g) before MTX was introduced (dosage: 10-12.5 mg/week). KS occurred one to nine months after the combined therapy. In one case, KS rapidly resolved after withdrawal of MTX...
June 28, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/28657574/megaprosthesis-of-the-knee-in-tumor-and-revision-surgery
#14
E Pala, G Trovarelli, A Angelini, M Maraldi, A Berizzi, Pietro Ruggieri
The introduction of multidisciplinary approach with chemo and radiotherapy, the advances in surgical and the improvements of diagnostic techniques allowed limb salvage surgery in most cases of bone sarcomas instead of amputation. Modular megaprostheses are the most common method of reconstruction after segmental resection of the long bones in the extremities for their availability, immediate fixation, early weight bearing, good function. Despite the advances in materials and implant designs, these systems have an high incidence of complications...
June 7, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28654633/chemotherapy-with-radiotherapy-influences-time-to-development-of-radiation-induced-sarcomas-a-multicenter-study
#15
A Y Zhang, I Judson, C Benson, J S Wunder, I Ray-Coquard, R J Grimer, R Quek, E Wong, A B Miah, P C Ferguson, A Dufresne, J Y H Teh, M Stockler, M H N Tattersall
BACKGROUND: An increasing number and proportion of cancer patients with apparently localised disease are treated with chemotherapy and radiation therapy in contemporary oncology practice. In a pilot study of radiation-induced sarcoma (RIS) patients, we demonstrated that chemotherapy was associated with a reduced time to development of RIS. We now present a multi-centre collaborative study to validate this association. METHODS: This was a retrospective cohort study of RIS cases across five large international sarcoma centres between 1 January 2000 to 31 December 2014...
June 27, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28643747/leiomyosarcoma-of-scrotum-a-rare-in-field-second-malignancy-in-a-previously-irradiated-carcinoma-of-prostate-and-review-of-literature
#16
Chelakkot G Prameela, Rahul Ravind
BACKGROUND: Curative intent treatments for malignancies using radiation therapy while achieving longer disease-free survivals, may also lead to solid second malignancies, a dreaded late complication. Both in-field as well as out-field second malignancies are encountered and lead to diagnostic dilemma, and delay in treatment. MATERIALS AND METHODS: Details of a case of rare, in-field, radiation induced leiomyosarcoma, a rare soft tissue sarcoma, in a treated case of high risk carcinoma of prostate, who presented to our tertiary care centre was retrieved and analysed...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28640064/predictors-of-local-recurrence-in-patients-with-myxofibrosarcoma
#17
Bismarck Odei, Jean-Claude Rwigema, Frederick R Eilber, Fritz C Eilber, Michael Selch, Arun Singh, Bartosz Chmielowski, Scott D Nelson, Pin-Chieh Wang, Michael Steinberg, Mitchell Kamrava
OBJECTIVES: Myxofibrosarcoma (MFS) is reported to have a higher risk of local recurrence (LR) following definitive surgical excision relative to other soft tissue sarcomas. We reviewed our clinical experience treating MFS to investigate predictors of LR. MATERIALS AND METHODS: We retrospectively reviewed treatment outcomes for MFS patients treated at our institution between 1999 and 2015. A total of 52 patients were identified. Median age was 65 years (range, 21 to 86 y)...
June 20, 2017: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28639571/recurrence-factors-in-giant-cell-tumors-of-the-spine
#18
Han-Qiang Ouyang, Liang Jiang, Xiao-Guang Liu, Feng Wei, Shao-Min Yang, Na Meng, Ping Jiang, Miao Yu, Feng-Liang Wu, Lei Dang, Hua Zhou, Hua Zhang, Zhong-Jun Liu
BACKGROUND: Giant cell tumors (GCTs) are benign, locally aggressive tumors. We examined the rate of local recurrence of spinal GCTs and sought to identify recurrence factors in patients who underwent surgery. METHODS: Between 1995 and 2014, 94 mobile spine GCT patients were treated at our hospital, comprising 43 male and 51 female patients with an average age of 33.4 years. Piecemeal intralesional spondylectomy and total en bloc spondylectomy (TES) were performed...
July 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28624428/undifferentiated-sarcoma-of-the-sphenoid-sinus
#19
Masaya Nagaishi, Kensuke Suzuki, Yoshiki Sugiura, Issei Takano, Yoshihiro Tanaka, Akio Hyodo
Paranasal sinuses sarcomas are rare and no treatments have been established. We report a young-adult case of sphenoid sinus sarcoma treated by carbon-ion radiotherapy. The patient presented with progressive left-sided visual impairment. A tumor was then identified and partial resection by transnasal approach was performed. The resected mass showed typical morphology of mesenchymal tumor, and morphological and molecular analyses ruled out a predominant-differentiation phenotype. The pathological diagnosis was undifferentiated sarcoma...
June 14, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28622765/unusual-primary-breast-cancer-malignant-peripheral-nerve-sheath-tumor-a-case-report-and-review-of-the-literature
#20
Md Shuayb, Rabeya Begum
BACKGROUND: Sarcomas are a rare type of breast malignancies and malignant peripheral nerve sheath tumors of the breast are even rarer. There are no specific clinical and radiological features for the diagnosis of this tumor and histological features are also reported to be nonspecific. Therefore, immunohistochemistry is required for its diagnosis. A definitive treatment protocol is unavailable because of its rarity. CASE PRESENTATION: We report a case of a sporadic form of breast malignant peripheral nerve sheath tumor found in a 16-year-old Asian Bangladeshi girl...
June 17, 2017: Journal of Medical Case Reports
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