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head and neck radiotherapy

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https://www.readbyqxmd.com/read/28429525/induction-chemotherapy-ict-followed-by-radiochemotherapy-for-locally-advanced-head-and-neck-cancer-as-an-individual-treatment-approach-feasibility-safety-and-retrospective-survival-analysis-in-twenty-three-patients
#1
C-J Busch, J Girke, S Tribius, L Bussmann, R Knecht, P Schafhausen, B B Lörincz, A Münscher
Head and neck squamous cell carcinoma (HNSCC) patients with locoregionally advanced disease usually require multi-modality treatment including surgery, chemotherapy, and radiotherapy. Currently, cisplatin-based concurrent chemoradiation (CRT) remains the gold-standard for these patients [1]. Induction chemotherapy (ICT) prior to definitive therapy is regarded as an effective approach to shrink locally advanced disease allowing more effective and less toxic therapy, to select patients for organ preservation, to improve radiotherapy effectiveness, and also to potentially decrease the risk of distant metastasis due to initial systemic exposure [2]...
April 21, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28426877/knockdown-of-hnrnpk-leads-to-increased-dna-damage-after-irradiation-and-reduces-survival-of-tumor-cells
#2
Nadine Wiesmann, Judith Strozynski, Carina Beck, Nadine Zimmermann, Simone Mendler, Rita Gieringer, Irene Schmidtmann, Jürgen Brieger
Radiotherapy is an important treatment option in the therapy of multiple tumor entities among them head and neck squamous cell carcinoma (HNSCC). However, the success of radiotherapy is limited by the development of radiation resistances. Heterogeneous nuclear ribonucleoprotein K (hnRNPK) is a cofactor of p53 and represents a potential target for radio sensitization of tumor cells. In this study, we analyzed the impact of hnRNPK on the DNA damage response after gamma irradiation. By yH2AX foci analysis, we found that hnRNPK knockdown increases DNA damage levels in irradiated cells...
March 1, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28424840/reirradiation-for-recurrent-head-and-neck-cancers-using-charged-particle-or-photon-radiotherapy
#3
Hideya Yamazaki, Yusuke Demizu, Tomoaki Okimoto, Mikio Ogita, Kengo Himei, Satoaki Nakamura, Gen Suzuki, Ken Yoshida, Tadayuki Kotsuma, Yasuo Yoshioka, Ryoongjin Oh
OBJECTIVE: To examine the outcomes of reirradiation for recurrent head and neck cancers using different modalities. METHODS: This retrospective study included 26 patients who received charged particle radiotherapy (CP) and 150 who received photon radiotherapy (117 CyberKnife radiotherapy [CK] and 36 intensity-modulated radiotherapy [IMRT]). Inverse probability of treatment weighting (IPTW) involving propensity scores was used to reduce background selection bias...
April 19, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28423594/the-hypoxia-activated-prodrug-evofosfamide-in-combination-with-multiple-regimens-of-radiotherapy
#4
Katarzyna J Nytko, Ivo Grgic, Sabine Bender, Janosch Ott, Matthias Guckenberger, Oliver Riesterer, Martin Pruschy
The promising treatment combination of ionizing radiation (IR) with a hypoxia-activated prodrug (HAP) is based on biological cooperation. Here we investigated the hypoxia-activated prodrug evofosfamide in combination with different treatment regimens of IR against lung A549- and head&neck UT-SCC-14-derived tumor xenografts. DNA damage-related endpoints and clonogenic cell survival of A549 and UT-SCC-14 carcinoma cells were probed under normoxia and hypoxia.Evofosfamide (TH-302) induced DNA-damage and a dose-dependent antiproliferative response in A549 cells on cellular pretreatment under hypoxia, and supra-additively reduced clonogenic survival in combination with IR...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423221/facial-asymmetry-in-head-and-neck-rhabdomyosarcoma-survivors
#5
Reineke A Schoot, Marinka L F Hol, Johannes H M Merks, Michael Suttie, Olga Slater, Marinde van Lennep, Saskia M J Hopman, David Dunaway, Jonathan Syme-Grant, Ludi E Smeele, Koos H Zwinderman, Huib N Caron, Peter Hammond
INTRODUCTION: Radiotherapy is essential for achieving and maintaining local control in head and neck rhabdomyosarcoma (HNRMS) patients. However, radiotherapy may cause outgrowth disturbances of facial bone and soft tissue, resulting in facial asymmetry. The aim of this study was to develop a method to visualize and measure facial asymmetry in HNRMS survivors using three-dimensional (3D) imaging techniques. METHODS: Facial deformity was evaluated in a multidisciplinary clinical assessment of 75 HNRMS survivors, treated with external beam radiotherapy (EBRT, n = 26) or Ablative surgery, MOulage brachytherapy, and REconstruction (AMORE, n = 49)...
April 19, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28419805/hypoglossal-nerve-upper-airway-stimulator-implantation-after-radiotherapy-for-head-and-neck-malignancy
#6
Zhong Zheng, Shirley Hu, Boris Chernobilsky
No abstract text is available yet for this article.
April 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28415784/misregulation-of-dna-damage-repair-pathways-in-hpv-positive-head-and-neck-squamous-cell-carcinoma-contributes-to-cellular-radiosensitivity
#7
Catherine M Nickson, Parisa Moori, Rachel J Carter, Carlos P Rubbi, Jason L Parsons
Patients with human papillomavirus type 16 (HPV)-associated oropharyngeal squamous cell carcinomas (OPSCC) display increased sensitivity to radiotherapy and improved survival rates in comparison to HPV-negative forms of the disease. However the cellular mechanisms responsible for this characteristic difference are unclear. Here, we have investigated the contribution of DNA damage repair pathways to the in vitro radiosensitivity of OPSCC cell lines. We demonstrate that two HPV-positive OPSCC cells are indeed more radiosensitive than two HPV-negative OPSCC cells, which correlates with reduced efficiency for the repair of ionising radiation (IR)-induced DNA double strand breaks (DSB)...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414799/comprehensive-evaluation-of-ten-deformable-image-registration-algorithms-for-contour-propagation-between-ct-and-cone-beam-ct-images-in-adaptive-head-neck-radiotherapy
#8
Xin Li, Yuyu Zhang, Yinghua Shi, Shuyu Wu, Yang Xiao, Xuejun Gu, Xin Zhen, Linghong Zhou
Deformable image registration (DIR) is a critical technic in adaptive radiotherapy (ART) for propagating contours between planning computerized tomography (CT) images and treatment CT/cone-beam CT (CBCT) images to account for organ deformation for treatment re-planning. To validate the ability and accuracy of DIR algorithms in organ at risk (OAR) contour mapping, ten intensity-based DIR strategies, which were classified into four categories-optical flow-based, demons-based, level-set-based and spline-based-were tested on planning CT and fractional CBCT images acquired from twenty-one head & neck (H&N) cancer patients who underwent 6~7-week intensity-modulated radiation therapy (IMRT)...
2017: PloS One
https://www.readbyqxmd.com/read/28410679/dual-energy-imaging-method-to-improve-the-image-quality-and-the-accuracy-of-dose-calculation-for-cone-beam-computed-tomography
#9
Kuo Men, Jianrong Dai, Xinyuan Chen, Minghui Li, Ke Zhang, Peng Huang
PURPOSE: To improve the image quality and accuracy of dose calculation for cone-beam computed tomography (CT) images through implementation of a dual-energy cone-beam computed tomography method (DE-CBCT), and evaluate the improvement quantitatively. METHODS: Two sets of CBCT projections were acquired using the X-ray volumetric imaging (XVI) system on a Synergy (Elekta, Stockholm, Sweden) system with 120kV (high) and 70kV (low) X-rays, respectively. Then, the electron density relative to water (relative electron density (RED)) of each voxel was calculated using a projection-based dual-energy decomposition method...
April 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28408096/local-treatment-of-a-pharyngocutaneous-fistula-secondary-to-osteoradionecrosis
#10
Olga González-Antolín
Radionecrosis is a late, and difficult to treat,complication of radiotherapy performed on head and neck tumours, and it is difficult to treat. This process causes significant damage, not only in the skin, but also in muscular, nervous, vascular, and bone structures. This, in turn, leads to airway and digestive tract involvement, as well as a functional loss and a cosmetic defect that usually requires reconstructive surgery. Therefore, this process is associated with a significant loss in the quality of life of patients and involves a long hospital stay for treatment, as well as the necessary support measures...
April 10, 2017: Enfermería Clínica
https://www.readbyqxmd.com/read/28403069/using-a-pedicle-pectoralis-major-musculocutaneous-flap-in-head-and-neck-reconstruction-after-modified-radical-mastectomy-a-case-report
#11
Jen-Wu Huang, Nai-Yuan Wu, Yi-Ying Lin
RATIONALE: A pedicle pectoralis major musculocutaneous (PMMC) flap is one of the strategies for head and neck reconstruction. Seldom studies reported the case in which the skin area of previous modified radical mastectomy (MRM) had been used as a PMMC flap in head and neck reconstruction. PATIENT CONCERNS: An 84-year-old female who had suffered from left breast cancer and undergone a left modified radical mastectomy (MRM) more than 20 years earlier. DIAGNOSES: She had squamous cell carcinoma of the tongue and had undergone partial glossection and left modified radial neck dissection...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28401452/polymorphism-of-promoter-region-of-tnfrsf1a-gene-610%C3%A2-t%C3%A2-%C3%A2-g-as-a-novel-predictive-factor-for-radiotherapy-induced-oral-mucositis-in-hnc-patients
#12
Anna Brzozowska, Tomasz Powrózek, Iwona Homa-Mlak, Radosław Mlak, Marzanna Ciesielka, Paweł Gołębiowski, Teresa Małecka-Massalska
Every year, about 650 thousand new cases of Head and Neck Cancer (HNC) are diagnosed globally. Apart from surgery, radiotherapy (RTH), chemotherapy (CHT) or its combination is used in the treatment of HNC. One of the most frequent complications and, at the same time, limitations of RTH is oral mucositis (OM). Proinflammatory cytokines (including TNF-α) play a key role in the development of OM. Genetic alterations, i.e. single nucleotide polymorphisms (SNPs) within genes encoding for receptors for TNF (ie. TNFRSF1A) may change their function...
April 11, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28400176/a-novel-method-to-evaluate-salivary-flow-rates-of-head-and-neck-cancer-patients-after-radiotherapy-a-pilot-study
#13
Luiz Felipe Palma, Fernanda Aurora Stabile Gonnelli, Marcelo Marcucci, Adelmo José Giordani, Rodrigo Souza Dias, Roberto Araújo Segreto, Helena Regina Comodo Segreto
INTRODUCTION: The procedure used to evaluate salivary flow rate is called sialometry. It can be performed through several techniques, but none appears to be really efficient for post-radiotherapy patients. OBJECTIVE: To adequate sialometry tests for head and neck cancer patients submitted to radiotherapy. METHODS: 22 xerostomic patients post-radiotherapy (total radiation dose ranging from 60 to 70Gy) were included in this study. Ten patients were evaluated using sialometries originally proposed by the Radiation Therapy Oncology Group and twelve were assessed by our modified methods...
March 25, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28397269/asian-and-non-asian-disparities-in-outcomes-of-non-nasopharyngeal-head-and-neck-cancer
#14
Jason D Kim, Jennifer T Chang, Ali Moghaddamjou, Emily A Kornelsen, Jenny Y Ruan, Robert A Olson, Winson Y Cheung
OBJECTIVES/HYPOTHESIS: To evaluate disparities in overall survival (OS) between Asian and non-Asian patients diagnosed with non-nasopharyngeal head and neck cancer (HNC). STUDY DESIGN: This was a population-based, retrospective study of patients diagnosed with non-nasopharyngeal HNC of squamous cell carcinoma histology between 2001 and 2010 in British Columbia, Canada. METHODS: Using Kaplan-Meier methods and Cox regression models, we examined the relationship between race and OS...
April 11, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28395504/influence-of-jaw-tracking-in-intensity-modulated-and-volumetric-modulated-arc-radiotherapy-for-head-and-neck-cancers-a-dosimetric-study
#15
Karthick Raj Mani, Sagar Upadhayay, K J Maria Das
PURPOSE: To Study the dosimetric advantage of the Jaw tracking technique in intensity-modulated radiotherapy (IMRT) and volumetric-modulated arc therapy (VMAT) for Head and Neck Cancers. MATERIALS AND METHODS: We retrospectively selected 10 previously treated head and neck cancer patients stage (T1/T2, N1, M0) in this study. All the patients were planned for IMRT and VMAT with simultaneous integrated boost technique. IMRT and VMAT plans were performed with jaw tracking (JT) and with static jaw (SJ) technique by keeping the same constraints and priorities for a particular patient...
March 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/28395502/reirradiation-of-head-and-neck-cancer-in-the-era-of-intensity-modulated-radiotherapy-patient-selection-practical-aspects-and-current-evidence
#16
REVIEW
Yeon Sil Kim
Locoregional failure is the most frequent pattern of failure in locally advanced head and neck cancer patients and it leads to death in most of the patients. Second primary tumors occurring in the other head and neck region reach up to almost 40% of long-term survivors. Recommended and preferred retreatment option in operable patients is salvage surgical resection, reporting a 5-year overall survival of up to 40%. However, because of tumor location, extent, and underlying comorbidities, salvage surgery is often limited and compromised by incomplete resection...
March 2017: Radiation Oncology Journal
https://www.readbyqxmd.com/read/28390539/retrospective-analysis-of-self-reporting-pain-scores-and-pain-management-during-head-and-neck-imrt-radiotherapy-a-single-institution-experience
#17
P O'Connor, J Bisson, P Asplin, D Gahir
AIMS: Head and neck carcinomas are relatively rare in the United Kingdom with an estimated 9000 cases diagnosed annually. However, pain associated with disease and treatment side effects such as oral mucositis present a major issue for therapy radiographers in providing effective care and maintaining radiotherapy treatment compliance, all factors that can compromise patient outcome if not managed appropriately. METHOD: This retrospective analysis of self-reporting pain scores collected during a course of radiotherapy aims to assess the perceived pain intensity scores in 30 patients...
May 2017: Radiography
https://www.readbyqxmd.com/read/28390531/pet-mr-imaging-in-head-and-neck
#18
REVIEW
Yueh Z Lee, Joana Ramalho, Brice Kessler
Head and neck cancers are a diverse group of cancers with high morbidity and mortality within an area of complex anatomy. High-quality anatomic and functional imaging is essential for preoperative, chemotherapeutic, and radiotherapy planning. Early studies show that hybrid PET-MR imaging offers great potential for improving the imaging of head and neck cancers. Furthermore, advanced MR imaging techniques may also be incorporated to further enhance the diagnostic value of the combined modality.
May 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/28386836/prospective-assessment-of-oral-mucositis-and-its-impact-on-quality-of-life-and-patient-reported-outcomes-during-radiotherapy-for-head-and-neck-cancer
#19
Pierfrancesco Franco, Stefania Martini, Jacopo Di Muzio, Chiara Cavallin, Francesca Arcadipane, Monica Rampino, Oliviero Ostellino, Giancarlo Pecorari, Paolo Garzino Demo, Massimo Fasolis, Mario Airoldi, Umberto Ricardi
Oral mucositis (OM) is a common acute side effect during radiotherapy treatments for head and neck cancer (HNC), with a potential impact on patient's compliance to therapy, quality of life (QoL) and clinical outcomes. Its timely and appropriate management is of paramount importance. Several quantitative scoring scales are available to properly assess OM and its influence on patient-reported outcomes (PROs) and QoL. We prospectively assessed OM in a cohort of HNC patients submitted to radiation using the Oral Mucositis Assessment Scale (OMAS), while its impact on PROs and QoL was evaluated employing the Oral Mucositis Weekly Questionnaire-Head and Neck Cancer (OMWQ-HN) and the Functional Assessment of Cancer Therapy-Head and Neck Cancer (FACT-HN)...
May 2017: Medical Oncology
https://www.readbyqxmd.com/read/28382396/retrospective-evaluation-of-concomitant-cetuximab-and-radiotherapy-tolerance-for-locoregional-advanced-head-and-neck-squamous-cell-carcinoma-treatment-in-patients-unfit-for-platinum-based-chemotherapy
#20
Audrey Rambeau, Radj Gervais, Dominique De Raucourt, Emmanuel Babin, Audrey Emmanuelle Dugué, Carmen Florescu, David Blanchard, Bernard Gery
Radiotherapy associated with cetuximab (Cet-RT) is an alternative treatment to platinum-based chemoradiotherapy in locally advanced head and neck carcinoma (LAHNC). Reviews suggest that the use of cetuximab is associated with poorer tolerance in patients unfit for chemotherapy than in pivotal trial. We retrospectively studied patients first treated by Cet-RT for LAHNC presenting contraindications to chemoradiotherapy. Objectives were treated population description, acute tolerance, progression-free survival (PFS), overall survival (OS), and 3-month clinical response...
April 5, 2017: European Archives of Oto-rhino-laryngology
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