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https://www.readbyqxmd.com/read/28343976/prophylactic-cranial-irradiation-versus-observation-in-patients-with-extensive-disease-small-cell-lung-cancer-a-multicentre-randomised-open-label-phase-3-trial
#1
Toshiaki Takahashi, Takeharu Yamanaka, Takashi Seto, Hideyuki Harada, Hiroshi Nokihara, Hideo Saka, Makoto Nishio, Hiroyasu Kaneda, Koichi Takayama, Osamu Ishimoto, Koji Takeda, Hiroshige Yoshioka, Motoko Tachihara, Hiroshi Sakai, Koichi Goto, Nobuyuki Yamamoto
BACKGROUND: Results from a previous phase 3 study suggested that prophylactic cranial irradiation reduces the incidence of symptomatic brain metastases and prolongs overall survival compared with no prophylactic cranial irradiation in patients with extensive-disease small-cell lung cancer. However, because of the absence of brain imaging before enrolment and variations in chemotherapeutic regimens and irradiation doses, concerns have been raised about these findings. We did a phase 3 trial to reassess the efficacy of prophylactic cranial irradiation in the treatment of extensive-disease small-cell lung cancer...
March 23, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28321355/a-rare-presentation-of-sarcoidosis-as-a-pancreatic-head-mass
#2
Shruti Mony, Pradnya D Patil, Rebekah English, Ananya Das, Daniel A Culver, Tanmay S Panchabhai
Sarcoidosis is a multisystem granulomatous syndrome of unknown etiology with noncaseating epithelioid granulomas being the pathognomonic pathological finding. Sarcoidosis most commonly involves the lungs and involvement of the gastrointestinal (GI) tract is uncommon. Pancreatic sarcoidosis is very rare, especially when it is the presenting feature of sarcoidosis and can masquerade as pancreatic cancer. Tissue infiltration in pancreatic sarcoidosis can lead to either a diffuse nodular appearance or a mass-like lesion...
2017: Case Reports in Pulmonology
https://www.readbyqxmd.com/read/28303695/dynamic-contrast-enhanced-mri-perfusion-for-differentiating-between-melanoma-and-lung-cancer-brain-metastases
#3
Vaios Hatzoglou, Jamie Tisnado, Alpesh Mehta, Kyung K Peck, Mariza Daras, Antonio M Omuro, Kathryn Beal, Andrei I Holodny
Brain metastases originating from different primary sites overlap in appearance and are difficult to differentiate with conventional MRI. Dynamic contrast-enhanced (DCE)-MRI can assess tumor microvasculature and has demonstrated utility in characterizing primary brain tumors. Our aim was to evaluate the performance of plasma volume (Vp) and volume transfer coefficient (K(trans) ) derived from DCE-MRI in distinguishing between melanoma and nonsmall cell lung cancer (NSCLC) brain metastases. Forty-seven NSCLC and 23 melanoma brain metastases were retrospectively assessed with DCE-MRI...
March 17, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28300372/lung-volume-reproducibility-under-abc-control-and-self-sustained-breath-holding
#4
Evangelia Kaza, Alex Dunlop, Rafal Panek, David J Collins, Matthew Orton, Richard Symonds-Tayler, Dualta McQuaid, Erica Scurr, Vibeke Hansen, Martin O Leach
An Active Breathing Coordinator (ABC) can be employed to induce breath-holds during CT imaging and radiotherapy of lung, breast and liver cancer, and recently during lung cancer MRI. The apparatus measures and controls respiratory volume, hence subject lung volume reproducibility is its principal measure of effectiveness. To assess ABC control quality, the intra-session reproducibility of ABC-induced lung volumes was evaluated and compared with that reached by applying the clinical standard of operator-guided self-sustained breath-holds on healthy volunteers during MRI...
March 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28279919/active-targeting-theranostic-iron-oxide-nanoparticles-for-mri-and-magnetic-resonance-guided-focused-ultrasound-ablation-of-lung-cancer
#5
Zhongling Wang, Ruirui Qiao, Na Tang, Ziwei Lu, Han Wang, Zaixian Zhang, Xiangdong Xue, Zhongyi Huang, Siruo Zhang, Guixiang Zhang, Yuanpei Li
Despite its great promise in non-invasive treatment of cancers, magnetic resonance-guided focused ultrasound surgery (MRgFUS) is currently limited by the insensitivity of magnetic resonance imaging (MRI) for visualization of small tumors, low efficiency of in vivo ultrasonic energy deposition, and damage to surrounding tissues. We hereby report the development of an active targeting nano-sized theranostic superparamagnetic iron oxide (SPIO) platform for significantly increasing the imaging sensitivity and energy deposition efficiency using a clinical MRgFUS system...
March 1, 2017: Biomaterials
https://www.readbyqxmd.com/read/28255381/can-endobronchial-or-endotracheal-metastases-appear-from-rectal-adenocarcinoma
#6
G L Serbanescu, R M Anghel
Background: Endobronchial and endotracheal metastases from extra-pulmonary solid tumors are rare. Patients and methods: We reported the case of a patient diagnosed with endobronchial and endotracheal metastases from rectal adenocarcinoma. Case report: Patient P.G., 62 years old, was diagnosed with a rectal tumor in 2011, for which, a surgical intervention was performed (pT3 pN2a M0, stage IIIB). Afterwards, she underwent adjuvant chemotherapy and concomitant radiochemotherapy. In September 2013, the chest CT showed 2 nodules for which, an incomplete surgical resection was done and which were histopathologically diagnosed as metastases from rectal cancer...
January 2017: Journal of Medicine and Life
https://www.readbyqxmd.com/read/28252525/comparative-characteristics-of-quantitative-indexes-for-18f-fdg-uptake-and-metabolic-volume-in-sequentially-obtained-pet-mri-and-pet-ct
#7
COMPARATIVE STUDY
Soo Jin Lee, Jin Chul Paeng, Jin Mo Goo, Jeong Min Lee, Gi Jeong Cheon, Dong Soo Lee, June-Key Chung, Keon Wook Kang
PURPOSE: The purpose of this study was to compare quantitative indexes for fluorine-18 fluorodeoxyglucose uptake and metabolic volume between PET/MRI and PET/CT. PATIENTS AND METHODS: Sixty-six patients with solid tumors (32 with lung cancer and 34 with pancreatic cancer) who underwent sequential fluorine-18 fluorodeoxyglucose PET/MRI and PET/CT were retrospectively enrolled. On PET images, maximum and peak standardized uptake values (SUVmax and SUVpeak, respectively), and maximum tumor-to-liver ratio (TLRmax) were measured...
April 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28242140/mri-guided-lung-sbrt-present-and-future-developments
#8
REVIEW
Martin J Menten, Andreas Wetscherek, Martin F Fast
Stereotactic body radiotherapy (SBRT) is rapidly becoming an alternative to surgery for the treatment of early-stage non-small cell lung cancer patients. Lung SBRT is administered in a hypo-fractionated, conformal manner, delivering high doses to the target. To avoid normal-tissue toxicity, it is crucial to limit the exposure of nearby healthy organs-at-risk (OAR). Current image-guided radiotherapy strategies for lung SBRT are mostly based on X-ray imaging modalities. Although still in its infancy, magnetic resonance imaging (MRI) guidance for lung SBRT is not exposure-limited and MRI promises to improve crucial soft-tissue contrast...
February 24, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28240514/economic-burden-of-avoidable-hospitalizations-among-patients-with-cancer-at-namazi-hospital-in-shiraz-2013
#9
Nahid Hatam, Tannaz Fanusi, Mehdi Dehghani, Reza Vojdani, Mani Ramzi, Mehrdad Askarian
Introduction: Hospitalization of patients with cancer has a significant economic impact and avoidance where unnecessary has great potential for significant cost savings for patients, individual hospitals and the health system in general. Methods: Demographic, clinical and economical data were collected from medical records in our hospital retrospectively. Oncology clinicians reviewed medical records to categorize each hospitalization as “potentially avoidable” or “not avoidable.” Patient demographic and clinical data were abstracted and quantitative and qualitative analyses were performed to identify patient characteristics and outcomes associated with potentially avoidable hospitalizations...
January 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28240218/an-anthropomorphic-breathing-phantom-of-the-thorax-for-testing-new-motion-mitigation-techniques-for-pencil-beam-scanning-proton-therapy
#10
R L Perrin, M Zakova, M Peroni, K Bernatowicz, C Bikis, A K Knopf, S Safai, P Fernandez-Carmona, N Tscharner, D C Weber, T C Parkel, A J Lomax
Motion-induced range changes and incorrectly placed dose spots strongly affect the quality of pencil-beam-scanned (PBS) proton therapy, especially in thoracic tumour sites, where density changes are large. Thus motion-mitigation techniques are necessary, which must be validated in a realistic patient-like geometry. We report on the development and characterisation of a dynamic, anthropomorphic, thorax phantom that can realistically mimic thoracic motions and anatomical features for verifications of proton and photon 4D treatments...
March 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28225485/magnetic-resonance-mr-imaging-for-tumor-staging-and-definition-of-tumor-volumes-on-radiation-treatment-planning-in-nonsmall-cell-lung-cancer-a-prospective-radiographic-cohort-study-of-single-center-clinical-outcome
#11
COMPARATIVE STUDY
Dan Zhao, Qiaoqiao Hu, Liping Qi, Juan Wang, Hao Wu, Guangying Zhu, Huiming Yu
We investigate the impact of magnetic resonance (MR) on the staging and radiotherapy planning for patients with nonsmall cell lung cancer (NSCLC).A total of 24 patients with NSCLC underwent MRI, which was fused with radiotherapy planning CT using rigid registration. Gross tumor volume (GTV) was delineated not only according to CT image alone (GTVCT), but also based on both CT and MR image (GTVCT/MR). For each patient, 2 conformal treatment plans were made according to GTVCT and GTVCT/MR, respectively. Dose-volume histograms (DVH) for lesion and normal organs were generated using both GTVCT and GTVCT/MR treatment plans...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28215632/ventricular-geometry-from-non-contrast-non-ecg-gated-ct-scans-an-imaging-marker-of-cardiopulmonary-disease-in-smokers
#12
Farbod N Rahaghi, Gonzalo Vegas-Sanchez-Ferrero, Jasleen K Minhas, Carolyn E Come, Isaac De La Bruere, James M Wells, Germán González, Surya P Bhatt, Brett E Fenster, Alejandro A Diaz, Puja Kohli, James C Ross, David A Lynch, Mark T Dransfield, Russel P Bowler, Maria J Ledesma-Carbayo, Raúl San José Estépar, George R Washko
RATIONALE AND OBJECTIVES: Imaging-based assessment of cardiovascular structure and function provides clinically relevant information in smokers. Non-cardiac-gated thoracic computed tomographic (CT) scanning is increasingly leveraged for clinical care and lung cancer screening. We sought to determine if more comprehensive measures of ventricular geometry could be obtained from CT using an atlas-based surface model of the heart. MATERIALS AND METHODS: Subcohorts of 24 subjects with cardiac magnetic resonance imaging (MRI) and 262 subjects with echocardiography were identified from COPDGene, a longitudinal observational study of smokers...
February 15, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28210799/dynamic-contrast-enhanced-mr-imaging-pharmacokinetic-parameters-as-predictors-of-treatment-response-of-brain-metastases-in-patients-with-lung-cancer
#13
Grégory Kuchcinski, Emilie Le Rhun, Alexis B Cortot, Elodie Drumez, Romain Duhal, Maxime Lalisse, Julien Dumont, Renaud Lopes, Jean-Pierre Pruvo, Xavier Leclerc, Christine Delmaire
OBJECTIVES: To determine the diagnostic accuracy of pharmacokinetic parameters measured by dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) in predicting the response of brain metastases to antineoplastic therapy in patients with lung cancer. METHODS: Forty-four consecutive patients with lung cancer, harbouring 123 newly diagnosed brain metastases prospectively underwent conventional 3-T MRI at baseline (within 1 month before treatment), during the early (7-10 weeks) and midterm (5-7 months) post-treatment period...
February 16, 2017: European Radiology
https://www.readbyqxmd.com/read/28168936/dosimetric-comparison-of-real-time-mri-guided-tri-cobalt-60-versus-linear-accelerator-based-stereotactic-body-radiation-therapy-lung-cancer-plans
#14
Andrzej P Wojcieszynski, Patrick M Hill, Stephen A Rosenberg, Craig R Hullett, Zacariah E Labby, Bhudatt Paliwal, Mark W Geurts, R Adam Bayliss, John E Bayouth, Paul M Harari, Michael F Bassetti, Andrew M Baschnagel
PURPOSE: Magnetic resonance imaging-guided radiation therapy has entered clinical practice at several major treatment centers. Treatment of early-stage non-small cell lung cancer with stereotactic body radiation therapy is one potential application of this modality, as some form of respiratory motion management is important to address. We hypothesize that magnetic resonance imaging-guided tri-cobalt-60 radiation therapy can be used to generate clinically acceptable stereotactic body radiation therapy treatment plans...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28162178/-a-clinical-study-on-the-pathogenesis-of-lung-cancer-related-cerebral-infarction
#15
X R Xie, C Qin, L Chen, D B Cheng, J Y Huang, X X Wei, L X Yu, Z J Liang
Objective: To explore the risk factors for lung cancer-related cerebral infarction. Methods: The hospitalized active lung cancer patients on anti-cancer therapy with no traditional stroke risk factors, who experienced an acute cerebral infarct in the First Affiliated Hospital of Guangxi Medical University from January 2005 to December 2015, were consecutively collected as the LCRS (lung cancer-related stroke) group. The active lung cancer patients without cerebral infarction hospitalized at the same peroid matched with the LCRS group for age and gender were collected as the LC (lung cancer) group...
February 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28152501/breast-cancer-cell-cyclooxygenase-2-expression-alters-extracellular-matrix-structure-and-function-and-numbers-of-cancer-associated-fibroblasts
#16
Balaji Krishnamachary, Ioannis Stasinopoulos, Samata Kakkad, Marie-France Penet, Desmond Jacob, Flonne Wildes, Yelena Mironchik, Arvind P Pathak, Meiyappan Solaiyappan, Zaver M Bhujwalla
Cyclooxygenase-2 (COX-2) is a critically important mediator of inflammation that significantly influences tumor angiogenesis, invasion, and metastasis. We investigated the role of COX-2 expressed by triple negative breast cancer cells in altering the structure and function of the extracellular matrix (ECM). COX-2 downregulation effects on ECM structure and function were investigated using magnetic resonance imaging (MRI) and second harmonic generation (SHG) microscopy of tumors derived from triple negative MDA-MB-231 breast cancer cells, and a derived clone stably expressing a short hairpin (shRNA) molecule downregulating COX-2...
January 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28151706/near-infrared-photoimmunotherapy-in-a-transgenic-mouse-model-of-spontaneous-epidermal-growth-factor-receptor-egfr-expressing-lung-cancer
#17
Yuko Nakamura, Zoe Weaver Ohler, Deborah Householder, Tadanobu Nagaya, Kazuhide Sato, Shuhei Okuyama, Fusa Ogata, Dagane Daar, Tieu Hoa, Peter L Choyke, Hisataka Kobayashi
Near infrared photoimmunotherapy (NIR-PIT) is a new cancer treatment that combines the specificity of antibodies for targeting tumors with the toxicity induced by a sensitive photoabsorber following exposure to NIR light. Most studies of NIR-PIT have been performed in xenograft models of cancer. The purpose of this study was to evaluate the therapeutic effects of NIR-PIT in a transgenic model of spontaneous lung cancer expressing human EGFR (hEGFR-TL). Mice were separated into 3 groups for the following treatments: (1) no treatment (control); (2) 150 μg of photoabsorber, IR700, conjugated to panitumumab, an antibody targeting EGFR [antibody-photoabsorber conjugate (APC)] intravenously (i...
February 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28131498/3d-mri-for-quantitative-analysis-of-quadrant-percent-breast-density-correlation-with-quadrant-location-of-breast-cancer
#18
Jeon-Hor Chen, Fuyi Liao, Yang Zhang, Yifan Li, Chia-Ju Chang, Chen-Pin Chou, Tsung-Lung Yang, Min-Ying Su
RATIONALE AND OBJECTIVES: Breast cancer occurs more frequently in the upper outer (UO) quadrant, but whether this higher cancer incidence is related to the greater amount of dense tissue is not known. Magnetic resonance imaging acquires three-dimensional volumetric images and is the most suitable among all breast imaging modalities for regional quantification of density. This study applied a magnetic resonance imaging-based method to measure quadrant percent density (QPD), and evaluated its association with the quadrant location of the developed breast cancer...
January 25, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28105214/detection-value-of-tumor-cells-in-cerebrospinal-fluid-in-the-diagnosis-of-meningeal-metastasis-from-lung-cancer-by-immuno-fish-technology
#19
Yuan Lv, Ning Mu, Chunhua Ma, Rong Jiang, Qiaoli Wu, Jinduo Li, Bin Wang, Liwei Sun
To investigate the detection value of tumor cells in cerebrospinal fluid (CSF) in the adjuvant diagnosis of meningeal metastasis from lung cancer by immunofluorescence in situ hybridization (immuno-FISH) technology. The circulating tumor cells (CTCs) in the CSF of 16 patients with meningeal metastasis from lung cancer and 8 with non-tumor diseases in the brain were detected using immuno-FISH technology. The diagnosis of meningeal metastasis from lung cancer was based on neurological symptoms, enhanced magnetic resonance imaging (MRI) scans and CSF cytological examination...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28101700/predicting-brain-metastases-for-non-small-cell-lung-cancer-based-on-magnetic-resonance-imaging
#20
Gang Yin, Churong Li, Heng Chen, Yangkun Luo, Lucia Clara Orlandini, Pei Wang, Jinyi Lang
In this study the relationship between brain structure and brain metastases (BM) occurrence was analyzed. A model for predicting the time of BM onset in patients with non-small cell lung cancer (NSCLC) was proposed. Twenty patients were used to develop the model, whereas the remaining 69 were used for independent validation and verification of the model. Magnetic resonance images were segmented into cerebrospinal fluid, gray matter (GM), and white matter using voxel-based morphometry. Automatic anatomic labeling template was used to extract 116 brain regions from the GM volume...
February 2017: Clinical & Experimental Metastasis
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