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Magnetic resonance imaging of lung cancer

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https://www.readbyqxmd.com/read/28816167/variabilities-of-magnetic-resonance-imaging-computed-tomography-and-positron-emission-tomography-computed-tomography-based-tumor-and-lymph-node-delineations-for-lung-cancer-radiation-therapy-planning
#1
Kishor Karki, Siddharth Saraiya, Geoffrey D Hugo, Nitai Mukhopadhyay, Nuzhat Jan, Jessica Schuster, Matthew Schutzer, Lester Fahrner, Robert Groves, Kathryn M Olsen, John C Ford, Elisabeth Weiss
PURPOSE: To investigate interobserver delineation variability for gross tumor volumes of primary lung tumors and associated pathologic lymph nodes using magnetic resonance imaging (MRI), and to compare the results with computed tomography (CT) alone- and positron emission tomography (PET)-CT-based delineations. METHODS AND MATERIALS: Seven physicians delineated the tumor volumes of 10 patients for the following scenarios: (1) CT only, (2) PET-CT fusion images registered to CT ("clinical standard"), and (3) postcontrast T1-weighted MRI registered with diffusion-weighted MRI...
September 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28803798/radiosynthesis-and-preclinical-pet-evaluation-of-89-zr-nivolumab-bms-936558-in-healthy-non-human-primates
#2
Erin L Cole, Joonyoung Kim, David J Donnelly, R Adam Smith, Daniel Cohen, Virginie Lafont, Paul E Morin, Richard Y-C Huang, Patrick L Chow, Wendy Hayes, Samuel Bonacorsi
Cancer immunotherapy, unlike traditional cytotoxic chemotherapeutic treatments, engages the immune system to identify cancer cells and stimulate immune responses. The Programmed Death-1 (PD-1) protein is an immunoinhibitory receptor expressed by activated cytotoxic T-lymphocytes (CTL) that seek out and destroy cancer cells. Multiple cancer types express and upregulate the Programmed Death-Ligand 1 (PD-L1) and 2 (PD-L2) which bind to PD-1 as an immune escape mechanism. Nivolumab is a fully human IgG4 anti-PD-1 monoclonal antibody (mAb) approved for treatment of multiple cancer types...
August 4, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28800298/impact-of-field-number-and-beam-angle-on-functional-image-guided-lung-cancer-radiotherapy-planning
#3
Bilal A Tahir, Chris M Bragg, Jim M Wild, James A Swinscoe, Sarah E Lawless, Kerry A Hart, Matthew Q Hatton, Rob H Ireland
To investigate the effect of beam angles and field number on functionally-guided intensity modulated radiotherapy (IMRT) normal lung avoidance treatment plans that incorporate hyperpolarised helium-3 magnetic resonance imaging ((3)He MRI) ventilation data. Eight non-small cell lung cancer patients had pre-treatment (3)He MRI that was registered to inspiration breath-hold radiotherapy planning computed tomography. IMRT plans that minimised the volume of total lung receiving  ⩾20 Gy (V20) were compared with plans that minimised (3)He MRI defined functional lung receiving  ⩾20 Gy (fV20)...
August 11, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28798808/altered-brain-functional-connectivity-in-small-cell-lung-cancer-patients-after-chemotherapy-treatment-a-resting-state-fmri-study
#4
Konstantinos Bromis, Kostakis Gkiatis, Irene Karanasiou, George Matsopoulos, Eustratios Karavasilis, Matilda Papathanasiou, Efstathios Efstathopoulos, Nikolaos Kelekis, Vasileios Kouloulias
Previous studies in small-cell lung cancer (SCLC) patients have mainly focused on exploring neurocognitive deficits associated with prophylactic cranial irradiation (PCI). Little is known about functional brain alterations that might occur due to chemotherapy treatment in this population before PCI is administered. For this reason, we used resting-state functional Magnetic Resonance Imaging (fMRI) to examine potential functional connectivity disruptions in brain networks, including the Default Mode Network (DMN), the Sensorimotor Network, and the Task-Positive Network (TPN)...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/28798322/luciferase-expression-allows-bioluminescence-imaging-but-imposes-limitations-on-the-orthotopic-mouse-4t1-model-of-breast-cancer
#5
V P Baklaushev, A Kilpeläinen, S Petkov, M A Abakumov, N F Grinenko, G M Yusubalieva, A A Latanova, I L Gubskiy, F G Zabozlaev, E S Starodubova, T O Abakumova, M G Isaguliants, V P Chekhonin
Implantation of reporter-labeled tumor cells in an immunocompetent host involves a risk of their immune elimination. We have studied this effect in a mouse model of breast cancer after the orthotopic implantation of mammary gland adenocarcinoma 4T1 cells genetically labelled with luciferase (Luc). Mice were implanted with 4T1 cells and two derivative Luc-expressing clones 4T1luc2 and 4T1luc2D6 exhibiting equal in vitro growth rates. In vivo, the daughter 4T1luc2 clone exhibited nearly the same, and 4T1luc2D6, a lower growth rate than the parental cells...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28790264/-a-case-of-lung-adenocarcinoma-presenting-with-leptomeningeal-carcinomatosis-successfully-treated-with-afatinib-after-erlotinib-induced-hepatotoxicity
#6
Hiroaki Tanaka, Minehiko Inomata, Ryuji Hayashi, Kazuki Shimokawa, Kotaro Tokui, Seisuke Okazawa, Kenta Kambara, Toru Yamada, Toshiro Miwa, Tatsuhiko Kashii, Hirofumi Konishi, Kazuyuki Tobe
A 65-year-old man was diagnosed with leptomeningeal carcinomatosis based on the findings of cerebrospinal fluid cytology and magnetic resonance imaging(MRI).Treatment with erlotinib and bevacizumab was initiated, and partial improvement in consciousness and MRI findings were obtained.However, it was difficult to continue the treatment because of elevation in levels of liver enzymes and melena.We switched the treatment to afatinib monotherapy, and his consciousness improved immediately.Progression -free survival and overall survival from the initiation of the treatment with afatinib were 7 and 9...
July 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28781798/paraneoplastic-limbic-encephalitis-with-late-onset-magnetic-resonance-imaging-findings-a-case-report
#7
Yoshiya Tsunoda, Takumi Kiwamoto, Shinsuke Homma, Yuuki Yabuuchi, Haruna Kitazawa, Toshihiro Shiozawa, Kensuke Nakazawa, Takashi Hosaka, Kazuhiro Ishii, Akiko Ishii, Akira Tamaoka, Nobuyuki Hizawa
Paraneoplastic limbic encephalitis (PLE), a paraneoplastic neurological syndrome (PNS), is a rare nervous system disorder that results from the indirect effects of tumors and is commonly associated with small-cell lung cancer (SCLC). Previous studies have reported that magnetic resonance imaging (MRI) may be useful for diagnosing LE. Temporal lobe abnormalities are observed using T2-weighted and fluid-attenuated inversion recovery sequences; however, such abnormalities are detected in only 60% of patients with PLE...
August 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28772286/prevalence-of-cancer-at-baseline-screening-in-the-national-cancer-institute-li-fraumeni-syndrome-cohort
#8
Phuong L Mai, Payal P Khincha, Jennifer T Loud, Rosamma M DeCastro, Renée C Bremer, June A Peters, Chia-Ying Liu, David A Bluemke, Ashkan A Malayeri, Sharon A Savage
Importance: Establishment of an optimal cancer surveillance program is important to reduce cancer-related morbidity and mortality in individuals with Li-Fraumeni syndrome, a rare, highly penetrant cancer predisposition syndrome. Objective: To determine the feasibility and efficacy of a comprehensive cancer screening regimen in Li-Fraumeni syndrome, using multiple radiologic techniques, including rapid whole-body magnetic resonance imaging (MRI) and laboratory measurements...
August 3, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28752500/negative-impact-of-leukoaraiosis-on-the-incidence-of-brain-metastases-in-patients-with-lung-cancer
#9
Nakamasa Hayashi, Koichi Mitsuya, Yoko Nakasu, Tateaki Naito, Fumiharu Ohka, Toshiaki Takahashi
The embolization of cancer cells to cerebral vessels occurs early in the multi-step metastatic process. We aimed to determine whether the presence of leukoaraiosis (LA) before treatment would predict the development of brain metastases (BM) in patients with lung cancer. Between January 2014 and June 2015, 1007 patients underwent initial (i.e., prior to any chemotherapy) or routine magnetic resonance (MR) imaging of the brain and exhibited no evidence of BM. Of these, 189 underwent repeat MR imaging; 34 of 189 patients (18%) developed new BM, whereas 155 patients did not...
July 27, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28749838/bevacizumab-for-the-treatment-of-gammaknife-radiosurgery-induced-brain-radiation-necrosis
#10
Yifang Ma, Chutian Zheng, Yiping Feng, Qingsheng Xu
BACKGROUND: Radiation necrosis is one of the complications of Gammaknife radiosurgery. The traditional treatment of radiation necrosis carries a high risk of failure, Bevacizumab is an antiangiogenic monoclonal antibody against vascular endothelial growth factor, a known mediator of cerebral edema. It can be used to successfully treat brain radiation necrosis. PATIENT DESCRIPTION: Two patients with a history of small cell lung cancer presented with metastatic disease to the brain...
July 26, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28740677/assessment-of-thoracic-vasculature-in-patients-with-central-bronchogenic-carcinoma-by-unenhanced-magnetic-resonance-angiography-comparison-between-2d-free-breathing-truefisp-2d-breath-hold-truefisp-and-3d-respiratory-triggered-space
#11
Lili Wang, Peng Lv, Shuohui Yang, Mengsu Zeng, Jiang Lin
BACKGROUND: Preoperative assessment of the integrity of major thoracic vessels in central bronchogenic carcinoma is vital for tumor staging and treatment planning. Contrast-enhanced CT is currently the first choice of modality for this purpose in clinical practice with limitations including exposure to ionizing radiation and the use of iodinated contrast material. MRI has been increasingly employed for the staging of lung cancer. More recently, unenhanced magnetic resonance angiography (MRA) which is totally non-invasive and contrast-free has been reported able to show thoracic vessels...
June 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28707652/thermal-ablation-in-the-management-of-adrenal-metastasis-originating-from-non-small-cell-lung-cancer-a-5-year-single-center-experience
#12
Evanthia I Botsa, Ioanna L Thanou, Aspasia T Papatheodoropoulou, Loukas I Thanos
BACKGROUND: Treatment of adrenal metastasis from lung carcinoma may prolong survival in the selected patients. However, not all patients can undergo surgery; thus, minimally invasive ablation procedures such as radiofrequency ablation (RFA) and microwave ablation (MWA) have gained acceptance as alternative treatment methods. This study summarized a 5-year single-center experience regarding the evaluation of safety and efficacy of computed tomography (CT)-guided thermal ablation in the management of adrenal metastasis originating from non-small cell lung cancer (NSCLC)...
July 13, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28693276/examination-of-the-predictive-factors-of-the-response-to-whole-brain-radiotherapy-for-brain-metastases-from-lung-cancer-using-mri
#13
Shuri Aoki, Tomonori Kanda, Noriyuki Matsutani, Nobuhiko Seki, Masafumi Kawamura, Shigeru Furui, Hideomi Yamashita
Previous studies have been conducted on the prognostic factors for overall survival in patients with brain metastases (BMs) following whole brain radiotherapy (WBRT). However, there have been a small number of studies regarding the prognostic factors for the response of tumor to WBRT. The aim of the present study was to identify the predictive factors for the response to WBRT from the point of view of reduction of tumor using magnetic resonance imaging. A retrospective analysis of 62 patients with BMs from primary lung cancer treated with WBRT was undertaken...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28660548/chemotherapy-induced-cardiomyopathy-caused-by-pemetrexed
#14
Takuya Oyakawa, Kei Iida, Masatoshi Kusuhara, Hirotsugu Kenmotsu, Takashi Sugino
Chemotherapy-related cardiac toxicity is a rare but serious adverse event in patients with cancer. Thus far, no case of serious cardiac toxicity of pemetrexed has been reported. We describe the case of a patient with advanced lung cancer and cardiomyopathy due to pemetrexed. A 59-year-old woman visited our hospital, and we found abnormal findings on a chest radiograph. She was diagnosed as having stage IV lung adenocarcinoma. Chemotherapy with cisplatin and pemetrexed every 3 weeks was initiated. After four cycles of chemotherapy, maintenance chemotherapy with pemetrexed was administered every 3 weeks...
June 28, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28651599/dosimetric-evaluation-of-synthetic-ct-for-magnetic-resonance-only-based-radiotherapy-planning-of-lung-cancer
#15
Hesheng Wang, Hersh Chandarana, Kai Tobias Block, Thomas Vahle, Matthias Fenchel, Indra J Das
BACKGROUND: Interest in MR-only treatment planning for radiation therapy is growing rapidly with the emergence of integrated MRI/linear accelerator technology. The purpose of this study was to evaluate the feasibility of using synthetic CT images generated from conventional Dixon-based MRI scans for radiation treatment planning of lung cancer. METHODS: Eleven patients who underwent whole-body PET/MR imaging following a PET/CT exam were randomly selected from an ongoing prospective IRB-approved study...
June 26, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28644254/sporadic-creutzfeldt-jakob-disease-with-unilateral-symptoms-in-the-setting-of-metastatic-renal-cell-carcinoma
#16
Kyle C Rossi, Christine M Stahl, Pengfei Zhang, John W Liang, Lara V Marcuse, Fred Lublin
INTRODUCTION: Although it is not rare for magnetic resonance imaging findings in Creutzfeldt-Jakob disease to be asymmetric, unilateral clinical syndromes are uncommonly reported and may confound diagnosis. In addition, neurological paraneoplastic syndromes are not common in renal cell carcinoma, though there are cases reported, often without an offending antibody isolated. CASE REPORT: A 66-year-old man was admitted with 1 month of left-sided numbness and "loss of control" of the left arm...
July 2017: Neurologist
https://www.readbyqxmd.com/read/28624021/assessment-of-treatment-response-after-lung-stereotactic-body-radiotherapy-using-diffusion-weighted-magnetic-resonance-imaging-and-positron-emission-tomography-a-pilot-study
#17
Takashi Shintani, Yukinori Matsuo, Yusuke Iizuka, Takamasa Mitsuyoshi, Shigeaki Umeoka, Yuji Nakamoto, Takashi Mizowaki, Kaori Togashi, Masahiro Hiraoka
BACKGROUND AND PURPOSE: There is no early predictor of treatment response after lung stereotactic body radiotherapy (SBRT). We conducted this pilot study to evaluate whether serial diffusion weighted magnetic resonance imaging (DW-MRI) or positron emission tomography (PET) could predict response after SBRT. MATERIAL AND METHODS: Early stage non-small cell lung cancer patients who received SBRT were eligible. DW-MRI and PET were undertaken pretreatment and every 3 months after SBRT in the first year...
July 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28606923/detection-of-driver-and-resistance-mutations-in-leptomeningeal-metastases-of-nsclc-by-next-generation-sequencing-of-cerebrospinal-fluid-circulating-tumor-cells
#18
Ben-Yuan Jiang, Yang-Si Li, Wei-Bang Guo, Xu-Chao Zhang, Zhihong Chen, Jian Su, Wenzhao Zhong, Xue-Ning Yang, Jinji Yang, Yang W Shao, Biao Huang, Yan-Hui Liu, Qing Zhou, Hai-Yan Tu, Hua-Jun Chen, Zhen Wang, Chongrui Xu, Bin-Chao Wang, Shu-Yu Wu, Cun-Yi Gao, Xian Zhang, Yi-Long Wu
<p>Leptomeningeal metastases (LM) are more common in non-small cell lung cancer (NSCLC) with EGFR mutations. The diagnosis is difficult by traditional imaging only, and leads to poor understanding of resistance mechanisms of LM.</p> <br />Experimental Design: <p>We compared the CellSearch Assay™, the Thinprep cytologic test (TCT), and brain magnetic resonance imaging (MRI) in 21 NSCLC patients with suspected LM. Next-Generation sequencing that included 416 cancer-associated genes was also performed on cerebrospinal fluid circulating tumor cells (CSFCTCs) of 19 patients...
June 12, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28581401/prospective-study-of-hippocampal-sparing-prophylactic-cranial-irradiation-in-limited-stage-small-cell-lung-cancer
#19
Kristin J Redmond, Russell K Hales, Heather Anderson-Keightly, Xian C Zhou, Megan Kummerlowe, Haris I Sair, Mario Duhon, Lawrence Kleinberg, Gary L Rosner, Tracy Vannorsdall
PURPOSE: To prospectively evaluate cognitive function and intracranial failure patterns after hippocampal-sparing prophylactic cranial irradiation (PCI) for limited-stage small cell lung cancer (SCLC). METHODS AND MATERIALS: Adults with limited-stage SCLC, achieving a complete response to chemoradiotherapy and no brain metastases, were eligible. Patients received PCI 25 Gy/10 fractions, with a mean hippocampal dose limited to <8 Gy and ≥90% of the brain receiving 90% of the prescription...
July 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28574131/surprising-complete-response-of-intramedullary-spinal-cord-metastasis-from-breast-cancer-a-case-report-and-literature-review
#20
Dario Aiello, Rosario Mazzola, Fabiana Gregucci, Francesco Ricchetti, Niccolò Giaj Levra, Luigi Romano, Giovanni Carbognin, Matteo Salgarello, Alberto Beltramello, Filippo Alongi
PURPOSE: Intramedullary spinal cord metastases (ISCM) are considered rare but their incidence is rising. Most ISCM cases are recognized to occur in patients with stage IV lung cancer or breast cancer (BC). METHODS: We report a rare case of cervical BC-ISCM in 60-year-old woman, documented by magnetic resonance imaging and positron emission tomography-computed tomography and treated with volumetric modulated arc therapy with daily image-guided radiation therapy (VMAT/IGRT)...
May 29, 2017: Tumori
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