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Radiotherapy radiation

Benedito Jamilson Araújo Pereira, Antônio Nogueira de Almeida, Wellingson Silva Paiva, Manoel Jacobsen Teixeira, Suely Kazue Nagahashi Marie
Evaluate whether radiotherapy (RT) after the neurosurgical treatment of atypical meningiomas (AM) has an impact on the reduction rate of recurrence. A Medline search through October 2017 using "atypical meningioma" returned 1277 papers for initial review. Inclusion criteria were as follows. We analyzed the database and included articles in which the anatomic pathological classification of atypical meningiomas was in accordance with WHO 2007 or WHO 2016 criteria, patients > 18 years of age, and there was postoperative external beam radiation to the tumor bed...
March 19, 2018: Neurosurgical Review
Chenxue Jiang, Shuiyun Han, Wucheng Chen, Xiaozhen Ying, He Wu, Yaoyao Zhu, Guodong Shi, Xiaojiang Sun, Yaping Xu
Background: and purpose: This retrospective study aimed to investigate the feasibility of shrinking field radiotherapy during chemoradiotherapy in non-small cell lung cancer (NSCLC). Patients and methods: Ninety-seven patients with stage III NSCLC who achieved a good response to chemoradiation were analyzed. Computed tomography was performed after 40-50 Gy dose radiation to evaluate curative effect. Patients in the shrinking field group underwent resimulation CT scans and shrinking field radiotherapy...
February 23, 2018: Oncotarget
Chuandong Zhu, Lixue Wang, Yang Cai, Guoxiang Wang, Hanfeng Xu, Yuan Wan, Qin Zheng
The high atomic number of gold nanoparticles (GNPs) enables them to offer potential as practical and efficient radiosensitizing agents for cancer radiotherapy applications. In the present study, it was demonstrated that GNPs can significantly modulate the irradiation response of hepatocellular carcinoma (HCC) cells in vitro and in vivo , of which the underlying mechanisms were investigated. Cetuximab (C225) is a targeting agent, which binds to the extracellular domain of epidermal growth factor receptor (EGFR)...
April 2018: Oncology Letters
Rohit Gunan Ganju, Mindi TenNapel, Nicholas Mahan, Amir Zahra, Xinglei Shen
Background: There is little data regarding the effectiveness of palliative radiation with conventional fractionation for metastatic renal cell carcinoma (RCC), which has been described as radioresistant. We conducted a retrospective analysis of patients with metastatic bony disease from RCC treated with radiation therapy at our institution. Methods: Forty patients with histologically confirmed RCC with a total of 53 treatment courses were included. Pain response after radiotherapy was recorded and freedom from progression was generated using posttreatment radiographs...
2018: Journal of Oncology
Kimberly M Arnold, Nicole J Flynn, Adam Raben, Lindsay Romak, Yan Yu, Adam P Dicker, Firas Mourtada, Jennifer Sims-Mourtada
In addition to inducing lethal DNA damage in tumor and stromal cells, radiation can alter the interactions of tumor cells with their microenvironment. Recent technological advances in planning and delivery of external beam radiotherapy have allowed delivery of larger doses per fraction (hypofractionation) while minimizing dose to normal tissues with higher precision. The effects of radiation on the tumor microenvironment vary with dose and fractionation schedule. In this review, we summarize the effects of conventional and hypofractionated radiation regimens on the immune system and tumor stroma...
2018: Cancer Growth and Metastasis
Xuanxuan Wang, Yanjun Gu, Hai Liu, Liming Shi, Xiaonan Sun
Background: Radiotherapy and cisplatin-based chemotherapy are currently considered as standard treatments employed for advanced cervical cancer (CC). However, patients with local recurrence or distant metastasis continue to have poor outcomes. EGFR overexpression correlated with chemo/radioresistance, and disease failure has been well proved in the previous studies. Hence, the aim of this study was to explore the therapeutic efficacy and underlying mechanism of the sensitization to radiation or cisplatin of icotinib hydrochloride (IH), a high-selective EGFR tyrosine kinase inhibitor (TKI), in the Hela S3 human CC cell line...
2018: OncoTargets and Therapy
Laura Curr Beamer, Marcia Grant
PURPOSE: The purpose of this pilot study was to explore the relationship between skin-related quality of life (SR-QOL) and global quality of life (G-QOL) among women experiencing breast radiodermatitis, measure change in SR-QOL and G-QOL between the start and fifth week on radiotherapy, and examine the trend in SR-QOL and severity of radiodermatitis over time on treatment. METHODS: A descriptive longitudinal study using repeated measurements was implemented. Forty women undergoing whole breast 3-dimensional conformal radiotherapy at a comprehensive community cancer center completed the Dermatology Life Quality Index (DLQI) weekly and Quality of Life-Breast Cancer Patient Version at baseline before and at five weeks on radiotherapy...
April 2018: European Journal of Oncology Nursing: the Official Journal of European Oncology Nursing Society
Shakeel Uz Zaman, Shakil Aqil, Mohammad Ahsan Sulaiman
OBJECTIVE: To identify the significant predictors of locoregional recurrence in early stage squamous cell carcinoma (SCC) of buccal mucosa with pathologically clear surgical margins and negative neck. METHOD: Seventy-three patients who underwent per oral wide excision and supraomohyoid neck dissection for early stage buccal SCC with clear surgical margins (>5mm margins each) and negative neck (N0) were included. None of the patients received postoperative radiotherapy or chemotherapy...
March 15, 2018: Acta Otorrinolaringológica Española
Ye Htut Linn, K Khine Thu, Nang Hla Hla Win
Radiotherapy is the mainstay treatment of cervical cancer and the most common acute side effect is radiation-induced diarrhoea (RID), which can affect up to 80% of the patients. The most frequently used probiotics for the RID in previous studies with somewhat positive results are Lactobacillus and Bifidobacterium strains. This study was aimed to investigate the effect of a probiotic containing live Lactobacillus acidophilus LA-5 plus Bifidobacterium animalis subsp. lactis BB-12 for the prevention of acute (RID) among cervical cancer patients...
March 17, 2018: Probiotics and Antimicrobial Proteins
Cindy R Timme, Barbara H Rath, John W O'Neill, Kevin Camphausen, Philip J Tofilon
Radiotherapy is a primary treatment modality for glioblastomas (GBMs). Because DNA-PKcs is a critical factor in the repair of radiation-induced double strand breaks (DSBs), this study evaluated the potential of VX-984, a new DNA-PKcs inhibitor, to enhance the radiosensitivity of GBM cells. Treatment of the established GBM cell line U251 and the GBM stem-like cell (GSC) line NSC11 with VX-984 under in vitro conditions resulted in a concentration-dependent inhibition of radiation-induced DNA-PKcs phosphorylation...
March 16, 2018: Molecular Cancer Therapeutics
Takuya Miyazaki, Yasuharu Haku, Akira Yoshizawa, Ken Iwanaga, Takashi Fujiwara, Masanobu Mizuta, Atsuhiro Yoshida, Shinichi Satou, Hisanobu Tamaki
OBJECTIVE: Nasal and sinonasal inverted papilloma (IP) are rare benign tumors and have the potential to exhibit malignancy in approximately 10% of cases. This study aimed to analyze the clinical features of IP associated with malignancy. Furthermore, we reviewed our therapeutic strategy and the clinical course of malignant IP. METHODS: Overall, 70 patients with IP at our institution were retrospectively analyzed from April 2006 to December 2015; of these, six (9%) had associated malignancy...
March 13, 2018: Auris, Nasus, Larynx
Rudolph M Navari
The approach to the treatment of nausea and vomiting in a cancer patient should begin with a complete assessment, including the frequency, duration, and intensity of the nausea/vomiting; associated activities; and whether anorexia or cachexia is present. It is important to determine whether the nausea and vomiting is related to treatment (chemotherapy, radiation) or is independent of cancer treatment. Nausea/vomiting unrelated to chemotherapy and/or radiation may have an etiology for which there is a specific and potentially successful intervention...
March 15, 2018: Oncology (Williston Park, NY)
Sweet Ping Ng, Joseph M Herman
Pancreatic cancer is a devastating disease with poor survival outcomes. Recent studies have shown that the addition of radiotherapy to chemotherapy in the setting of locally advanced pancreatic cancer did not improve overall survival outcome. These studies commonly utilize conventional radiotherapy treatment fractionation and technique (typically 3-D conformal radiotherapy or intensity modulated radiotherapy). Although no clear benefit in overall survival was demonstrated in those studies, those who received radiotherapy did have a clear benefit in terms of local control...
March 16, 2018: Cancers
Seo Hee Choi, Jee Suk Chang, Hong In Yoon, Dong-Su Jang, Nam Kyu Kim, Joon Seok Lim, Byung So Min, Hyuk Huh, Sang Joon Shin, Joong Bae Ahn, Woong Sub Koom
PURPOSE: Patterns of locoregional rectal cancer recurrences following total mesorectal excision (TME) were analyzed to define the irradiation volume, especially the lateral pelvic lymph node (LPLN). MATERIALS AND METHODS: Of 1243 patients who underwent TME without pelvic radiotherapy between 2005 and 2012, the data of 826 patients with rectal adenocarcinoma without distant metastases were analyzed for relapse patterns, categorized as distant and locoregional (anastomosis, mesorectum, presacral area, and LPLNs) failure...
March 15, 2018: Journal of Cancer Research and Clinical Oncology
Yang Chen, Youyou Wang, Lujun Zhao, Ping Wang, Jifeng Sun, Rudi Bao, Chenghai Li, Ningbo Liu
Objective: To investigate the potential of HS-10182, a second-generation epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI), as a radiosensitizer in non-small cell lung cancer (NSCLC). Methods: Two cell lines of NSCLCs, A549 that possesses wild-type (WT) EGFRs and H1975 that possesses EGFR L858R/T790M double mutations, were treated with HS-10182 at various concentrations, and cell viabilities were determined using the MTS assay. The cells were tested by clonogenic survival assays to identify the radiosensitivity of both groups...
February 2018: Cancer Biology & Medicine
Way Chiang, Zofia Tynski
Angiosarcoma is a rare vascular soft tissue tumor of endothelial origin most commonly seen in the elderly as a primary cutaneous head and neck malignancy. Furthermore, a peritoneal angiosarcoma is an exceedingly rare entity. This is the second case of primary peritoneal angiosarcoma reported in literature that is not associated with prior radiotherapy. Herein, we describe a case of primary peritoneal angiosarcoma metastatic to both the liver and bone in a male patient with metachronous renal cell carcinoma and parathyroid adenoma...
2018: Case Reports in Pathology
Xiaowen Sun, Lei Deng, You Lu
Microvessels promote proliferation of tumor cells by delivering oxygen and nutrients, but rapid growth of tumors results in unmet demands for oxygen and nutrients, thereby creating a hypoxia microenvironment. Under hypoxic conditions, vascular endothelial cells (ECs) initiate the formation of immature and abnormal microvasculature. This results in leakage and tortuosity that facilitates tumor cell invasion, metastasis and resistance to cytotoxic treatment. Radiotherapy (RT) is a vital tumor treatment modality...
February 2018: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
Jiawang Wei, Huixia Feng, Weiwei Xiao, Qiaoxuan Wang, Bo Qiu, Shiliang Liu, Meiling Deng, Lixia Lu, Hui Chang, Yuanhong Gao
Objective: Stage N2-3 nasopharyngeal carcinoma (NPC) shows a high risk of distant metastasis, which will finally cause death. This study aimed to evaluate the impact of neoadjuvant chemotherapy (NACT) of various cycles before radical radiotherapy on distant metastasis and survival of patients with stage N2-3 diseases. Methods: In this study, a total of 1,164 consecutive patients with non-metastatic N2-3 NPC were recruited and prospectively observed. Then 231 patients who received NACT of 4 cycles (NACT=4 group) were matched 1:2:1 to 462 patients treated with NACT of 2 cycles (NACT=2 group) and 231 patients treated without NACT (NACT=0 group), according to age, histological subtype, N stage and NACT regimen...
February 2018: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
Khaled Elshazly, Varun R Kshettry, Christopher J Farrell, Gurston Nyquist, Marc Rosen, James J Evans
BACKGROUND: Giant pituitary adenomas represent a surgical challenge. We present the results of the endoscopic endonasal approach (EEA) for giant pituitary adenomas. METHODS: We retrospectively reviewed medical records of 55 patients with giant pituitary adenomas (> 4 cm in maximum diameter) that underwent an EEA from 2008 - 2016. Factors affecting the extent of resection (EOR) were evaluated. RESULTS: Mean age was 55.5 years. All tumors were non-functional except in four patients (GH-secreting [2], ACTH-secreting [1], prolactinoma [1])...
March 12, 2018: World Neurosurgery
Olabisi R Sanusi, Omar Arnaout, Rudy J Rahme, Craig Horbinski, James P Chandler
OBJECTIVE: Chordomas are rare tumors of notochordal origin that are known to be locally aggressive and are often treated with surgical resection followed by adjuvant radiotherapy. The accepted standard of treatment for chordomas of the mobile spine which includes en-bloc resection with wide margins cannot be easily applied to the chordomas of the skull base given their proximity to critical neurovascular structures. We describe our experience with the role of surgery and adjuvant radiation in the treatment of chordomas over 16 years...
March 12, 2018: World Neurosurgery
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