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https://www.readbyqxmd.com/read/28212588/colorectal-polypectomy-and-endoscopic-mucosal-resection-emr-european-society-of-gastrointestinal-endoscopy-esge-clinical-guideline
#1
Monika Ferlitsch, Alan Moss, Cesare Hassan, Pradeep Bhandari, Jean-Marc Dumonceau, Gregorios Paspatis, Rodrigo Jover, Cord Langner, Maxime Bronzwaer, Kumanan Nalankilli, Paul Fockens, Rawi Hazzan, Ian M Gralnek, Michael Gschwantler, Elisabeth Waldmann, Philip Jeschek, Daniela Penz, Denis Heresbach, Leon Moons, Arnaud Lemmers, Konstantina Paraskeva, Juergen Pohl, Thierry Ponchon, Jaroslaw Regula, Alessandro Repici, Matthew D Rutter, Nicholas G Burgess, Michael J Bourke
1 ESGE recommends cold snare polypectomy (CSP) as the preferred technique for removal of diminutive polyps (size ≤ 5 mm). This technique has high rates of complete resection, adequate tissue sampling for histology, and low complication rates. (High quality evidence, strong recommendation.) 2 ESGE suggests CSP for sessile polyps 6 - 9 mm in size because of its superior safety profile, although evidence comparing efficacy with hot snare polypectomy (HSP) is lacking. (Moderate quality evidence, weak recommendation...
February 17, 2017: Endoscopy
https://www.readbyqxmd.com/read/28209559/irreversible-electroporation-for-the-ablation-of-renal-cell-carcinoma-a-prospective-human-in-vivo-study-protocol-ideal-phase-2b
#2
Mara Buijs, Krijn P van Lienden, Peter Gk Wagstaff, Matthijs Jv Scheltema, Daniel M de Bruin, Patricia J Zondervan, Otto M van Delden, Ton G van Leeuwen, Jean Jmch de la Rosette, M Pilar Laguna
BACKGROUND: Irreversible electroporation (IRE) is an emerging technique delivering electrical pulses to ablate tissue, with the theoretical advantage to overcome the main shortcomings of conventional thermal ablation. Recent short-term research showed that IRE for the ablation of renal masses is a safe and feasible treatment option. In an ablate and resect design, histopathological analysis 4 weeks after radical nephrectomy demonstrated that IRE-targeted renal tumors were completely covered by ablation zone...
February 16, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28205111/risk-factors-for-bile-duct-injury-after-percutaneous-thermal-ablation-of-malignant-liver-tumors-a-retrospective-case-control-study
#3
Man-Xia Lin, Jie-Yi Ye, Wen-Shuo Tian, Ming Xu, Bo-Wen Zhuang, Ming-De Lu, Xiao-Yan Xie, Ming Kuang
BACKGROUND: Bile duct injury after ablation of malignant liver tumors (MLTs) was not unusual and should be avoided. However, few studies have focused on evaluating the risk factors for intrahepatic bile duct injury. AIM: To evaluate the risk factors for intrahepatic bile duct injury after ablation of MLTs and to evaluate the minimum safe distance for ablating tumors abutting bile ducts. METHODS: Sixty-five patients with intrahepatic bile duct injury after ablation of MLTs, and 65 controls were recruited...
February 15, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28199998/delayed-intraparenchymal-and-intraventricular-hemorrhage-requiring-surgical-evacuation-after-mri-guided-laser-interstitial-thermal-therapy-for-lesional-epilepsy
#4
Sean M Barber, Luke Tomycz, Timothy George, Dave F Clarke, Mark Lee
BACKGROUND: Symptomatic intracranial hemorrhage is a rare complication of laser interstitial thermal therapy (LITT). OBJECTIVES: To present a unique case of delayed symptomatic intracranial hemorrhage occurring after a LITT procedure for epilepsy in a high-volume center (68 LITT procedures for pediatric epilepsy have been performed). METHODS: An 18-year-old male with epilepsy underwent LITT to an area of heterotopia near the right lateral ventricle...
February 16, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28195194/in-situ-study-of-nucleation-and-aggregation-phases-for-nanoparticles-grown-by-laser-driven-methods
#5
M Barberio, P Antici
In the last decades, nanomaterials and nanotechnologies have become fundamental and irreplaceable in many fields of science and technology. When used in applications, their properties depend on many factors such as size, shape, internal structure and composition. For this, exact knowledge of their structural features is essential when developing fabrication technologies and searching for new types of nanostructures or nanoparticles with specific properties. For the latter, the knowledge of the precise temporal evolution of the growth processes is fundamental when it comes to industrial production and applications...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28192653/double-network-structured-graphene-oxide-containing-nanogels-as-photothermal-agents-for-the-treatment-of-colorectal-cancer
#6
Calogero Fiorica, Nicolò Mauro, Giovanna Pitarresi, Cinzia Scialabba, Fabio S Palumbo, Gaetano Giammona
Here, we reported the production of hyaluronic acid/polyaspartamide-based double-network nanogels for the potential treatment of colorectal carcinoma. Graphene oxide, thanks to the huge aromatic surface area, allows to easily load high amount of irinotecan (33.0 % w/w) and confers to the system hyperthermic properties when irradiated with a near infrared (NIR) laser beam. We demonstrate that the release of antitumor drug is influenced both by the pH of the external medium and the NIR irradiation process. In vitro biological studies, conducted on human colon cancer cells (HCT 116), revealed that nanogels are uptaken by the cancer cells and, in the presence of the antitumor drug, can produce a synergistic hyperthermic/cytotoxic effect...
February 13, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28192185/hepatic-decompensation-is-the-major-driver-of-death-in-hcv-infected-cirrhotic-patients-with-successfully-treated-early-hepatocellular-carcinoma
#7
Giuseppe Cabibbo, Salvatore Petta, Marco Barbara, Simona Attardo, Laura Bucci, Fabio Farinati, Edoardo G Giannini, Giulia Negrini, Francesca Ciccarese, Gian Lodovico Rapaccini, Maria Di Marco, Eugenio Caturelli, Marco Zoli, Franco Borzio, Rodolfo Sacco, Roberto Virdone, Fabio Andrea Marra Mega, Filomena Morisco, Luisa Benvegnù, Antonio Gasbarrini, Gianluca Svegliati-Baroni, Francesco Giuseppe Foschi, Andrea Olivani, Alberto Masotto, Gerardo Nardone, Antonio Colecchia, Marcello Persico, Antonio Craxì, Franco Trevisani, Calogero Cammà
BACKGROUND & AIMS: A major problem in assessing the long-term outcome of HCV-infected cirrhotic patients with successfully treated Barcelona Clinic Liver Cancer (BCLC) A hepatocellular carcinoma (HCC) arises from the lack of models accounting for early changes during follow-up. AIM: of study is to estimate the impact on 5-year overall survival (OS) of early (occurring within 12 months after complete radiological response) time-dependents events (HCC recurrence or hepatic decompensation) in a large cohort of successfully treated HCC patients with HCV cirrhosis...
February 9, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28186470/image-guidance-based-on-mri-for-spinal-interstitial-laser-thermotherapy-technical-aspects-and-accuracy
#8
Claudio E Tatsui, Clarissa N G Nascimento, Dima Suki, Behrang Amini, Jing Li, Amol J Ghia, Jonathan G Thomas, R Jason Stafford, Laurence D Rhines, Juan P Cata, Ashok J Kumar, Ganesh Rao
OBJECTIVE Image guidance for spinal procedures is based on 3D-fluoroscopy or CT, which provide poor visualization of soft tissues, including the spinal cord. To overcome this limitation, the authors developed a method to register intraoperative MRI (iMRI) of the spine into a neuronavigation system, allowing excellent visualization of the spinal cord. This novel technique improved the accuracy in the deployment of laser interstitial thermal therapy probes for the treatment of metastatic spinal cord compression...
February 10, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28185998/study-on-the-effect-of-chemoembolization-combined-with-microwave-ablation-for-the-treatment-of-hepatocellular-carcinoma-in-rats
#9
Thomas Josef Vogl, Jun Qian, Andreas Tran, Elsie Oppermann, Nagy N Naguib, Huedayi Korkusuz, Nour Eldin A Nour Eldin, Wolf Otto Bechstein
PURPOSE: We aimed to evaluate the combining effects of transarterial chemoembolization (TACE) and open local thermal microwave ablation (MWA) in a hepatocellular carcinoma animal model. METHODS: Tumor cubes were implanted into the liver of 30 male inbred ACI rats. Groups of 10 animals were treated at 13 days (TACE or MWA) and 16 days (MWA) postimplantation with combined therapy (study group A) of TACE (0.1 mg mitomycin C; 0.1 mg iodized oil; 5.0 mg degradable starch microspheres) and MWA (2450 Mhz; 45 s; 35 W), TACE (control group B) or MWA (control group C) alone...
February 10, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28185295/irreversible-electroporation-for-the-ablation-of-pancreatic-malignancies-a-patient-specific-methodology
#10
Eduardo L Latouche, Michael B Sano, Melvin F Lorenzo, Rafael V Davalos, Robert C G Martin
BACKGROUND AND OBJECTIVES: Irreversible Electroporation (IRE) is a focal ablation technique highly attractive to surgical oncologists due to its non-thermal nature that allows for eradication of unresectable tumors in a minimally invasive procedure. In this study, our group sought to address the challenge of predicting the ablation volume with IRE for pancreatic procedures. METHODS: In compliance with HIPAA and hospital IRB approval, we established a pre-treatment planning methodology for IRE procedures in pancreas, which optimized treatment protocols for individual cases of locally advanced pancreatic cancer (LAPC)...
February 10, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28184961/renal-mass-biopsy-and-thermal-ablation-should-biopsy-be-performed-before-or-during-the-ablation-procedure
#11
Shane A Wells, Vincenzo K Wong, Tyler A Wittmann, Meghan G Lubner, Sara L Best, Timothy J Ziemlewicz, J Louis Hinshaw, Fred T Lee, E Jason Abel
PURPOSE: To determine if renal mass biopsy should be performed before or during the ablation procedure with emphasis on complications and rate of ablation for renal cell carcinomas (RCC), benign tumors, and small renal masses without a histologic diagnosis. METHODS: This HIPAA-compliant, single-center retrospective study was performed under a waiver of informed consent from the institutional review board. Two hundred eighty-four consecutive patients with a small renal mass (≤4...
February 9, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28181673/laser-induced-thermal-coagulation-enhances-skin-uptake-of-topically-applied-compounds
#12
C S Haak, J Hannibal, U Paasch, R R Anderson, M Haedersdal
BACKGROUND: Ablative fractional laser (AFL) generates microchannels in skin surrounded by a zone of thermally altered tissue, termed the coagulation zone (CZ). The thickness of CZ varies according to applied wavelength and laser settings. It is well-known that AFL channels facilitate uptake of topically applied compounds, but the importance of CZ is unknown. METHODS: Franz Cells were used to investigate skin uptake and permeation of fluorescent labeled polyethylene glycols (PEGs) with mean molecular weights (MW) of 350, 1,000, and 5,000 Da...
February 9, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28180965/-18-f-fdg-pet-as-novel-imaging-biomarker-for-disease-progression-after-ablation-therapy-in-colorectal-liver-metastases
#13
M Samim, W Prevoo, B J de Wit-van der Veen, K F Kuhlmann, T Ruers, R van Hillegersberg, M A A J van den Bosch, H M Verkooijen, M G E H Lam, M P M Stokkel
PURPOSE: Recurrent disease following thermal ablation therapy is a frequently reported problem. Preoperative identification of patients with high risk of recurrent disease might enable individualized treatment based on patients' risk profile. The aim of the present work was to investigate the role of metabolic parameters derived from the pre-ablation (18)F-FDG PET/CT as imaging biomarkers for recurrent disease in patients with colorectal liver metastases (CLM). METHODS: Included in this retrospective study were all consecutive patients with CLM treated with percutaneous or open thermal ablation therapy who had a pre-treatment baseline (18)F-FDG PET/CT available...
February 8, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28171791/generation-of-narrowband-elastic-waves-with-a-fiber-laser-and-its-application-to-the-imaging-of-defects-in-a-plate
#14
Takahiro Hayashi, Ken Ishihara
Pulsed laser equipment can be used to generate elastic waves through the instantaneous reaction of thermal expansion or ablation of the material; however, we cannot control the waveform generated by the laser in the same manner that we can when piezoelectric transducers are used as exciters. This study investigates the generation of narrowband tone-burst waves using a fiber laser of the type that is widely used in laser beam machining. Fiber lasers can emit laser pulses with a high repetition rate on the order of MHz, and the laser pulses can be modulated to a burst train by external signals...
January 26, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28161827/concurrent-chemotherapy-alone-versus-irreversible-electroporation-followed-by-chemotherapy-on-survival-in-patients-with-locally-advanced-pancreatic-cancer
#15
Giuseppe Belfiore, Maria Paola Belfiore, Alfonso Reginelli, Raffaella Capasso, Francesco Romano, Giovanni Pietro Ianniello, Salvatore Cappabianca, Luca Brunese
Pancreatic adenocarcinoma is one of the most fatal cancers, characterized by aggressive tumor growth and a short patient survival time between diagnosis and death. Safe and effective treatment options are limited, especially in cases when surgical resection is not possible. Irreversible electroporation (IRE) is a non-thermal ablation technique recently introduced in the treatment of pancreatic cancer. From 2013 to 2016, 29 cases of locally advanced pancreatic cancer (LAPC) treated with IRE were retrospectively analyzed and the median overall survival (OS) rates were compared with patients with the same diagnosis who received standard chemotherapy as reported in the literature...
March 2017: Medical Oncology
https://www.readbyqxmd.com/read/28160267/third-line-treatment-of-colorectal-liver-metastases-using-debiri-chemoembolization
#16
Germano Scevola, Giorgio Loreni, Marco Rastelli, Stefano Sposato, Sara Ramponi, Vittorio Miele
To evaluate safety, efficacy of drug-eluting beads with irinotecan (DEBIRI) on local response and survival of patients affected by colorectal liver metastases (CRLM) progressing during or after second line was evaluated. Sixty-two patients, with colorectal liver metastases, not suitable for surgery or thermal ablation treatments, progressing during or within 6 month from the end of second-line chemotherapy, were treated with DEBIRI chemoembolization between February 2009 and July 2014. CRLM were histologically confirmed...
March 2017: Medical Oncology
https://www.readbyqxmd.com/read/28160105/endoscopic-radiofrequency-ablation-of-the-pancreas
#17
REVIEW
Tarun Rustagi, Ankit Chhoda
Radiofrequency ablation (RFA) is a well-established technique to ablate dysplastic and neoplastic tissue via local thermal coagulative necrosis. Despite the widespread use in management of several cancers, the application of RFA in pancreas has been limited due to the increased risks of complications from the increased sensitivity of pancreatic tissue to thermal injury and proximity to vascular and biliary structures. RFA has been successfully used during laparotomy for locally advanced pancreatic carcinoma but requires an invasive approach...
February 3, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28155952/cuco2s4-nanocrystals-a-new-platform-for-multimodal-imaging-guided-photothermal-therapy
#18
Xiaojuan Huang, Guoying Deng, Lijun Liao, Wenlong Zhang, Guoqiang Guan, Feng Zhou, Zhiyin Xiao, Rujia Zou, Qian Wang, Junqing Hu
Multifunctional nanomaterials open an avenue for the integration of cancer treatment and diagnosis, trending towards the clinical application of nanomedicines in future. Herein, we synthesized biocompatible CuCo2S4 nanocrystals (NCs) via a simple reflux method and unitized them as a new theranostic platform, where an intense near-infrared (NIR) absorption offers the CuCo2S4 NCs a perfect photothermal performance and photoacoustic (PA) imaging ability; the magnetic characteristic of Co allows them to serve as an enhanced magnetic resonance (MR) contrast agent...
February 3, 2017: Nanoscale
https://www.readbyqxmd.com/read/28155684/the-comparison-of-lesion-outline-and-temperature-field-determined-by-different-ways-in-atrial-radiofrequency-ablation
#19
Zhen Tian, Qun Nan, Xiaohui Nie, Tong Dong, Ruirui Wang
BACKGROUND: The aim of this study is to research the lesion outline and temperature field in different ways in atrial radiofrequency ablation by using finite element method. METHODS: This study used the method which considered the thermal dosage to determine the boundary between viable and dead tissue, and compared to the 50 °C isotherm results in analyzing lesion outline. Besides, we used Hyperbolic equation which considered the relaxation time to calculate the temperature field and contrasted it with Pennes' bioheat transfer equation...
December 28, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28151729/numerical-simulation-of-microwave-ablation-incorporating-tissue-contraction-based-on-thermal-dose
#20
Dong Liu, Christopher L Brace
Tissue contraction plays an important role during high temperature tumor ablation, particularly during device characterization, treatment planning and imaging follow up. We measured such contraction in 18 ex vivo bovine liver samples during microwave ablation by tracking fiducial motion on CT imaging. Contraction was then described using a thermal dose dependent model and a negative thermal expansion coefficient based on the empirical data. FEM simulations with integrated electromagnetic wave propagation, heat transfer, and structural mechanics were evaluated using temperature-dependent dielectric properties and the negative thermal expansion models...
February 2, 2017: Physics in Medicine and Biology
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