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https://www.readbyqxmd.com/read/28728314/local-recurrence-and-its-risk-factor-after-incomplete-resection-of-colorectal-advanced-adenomas-a-single-center-retrospective-study
#1
Dae Myung Oh, Jae Kwang Lee, Hyunsoo Kim, Chang Keun Park, Jae Kwon Jung, Dae Jin Kim, Yun Jin Chung, Tae Hoon Kim, Myung Il Park, Jong Pil Park
Background/Aims: Colonoscopy can detect precancerous lesions, which can subsequently be removed and reduce incidences of and mortality from colorectal cancer (CRC). However, recently published data have highlighted a significant rate of CRC in patients who previously underwent colonoscopy. Among many reasons, incomplete resection has been considered as a significant contributor. However, to date, there have only been a few studies regarding incompletely resected polyps, especially advanced colorectal adenoma (ACA)...
July 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28727635/salvage-endoscopic-argon-plasma-coagulation-after-chemoradiotherapy-for-inoperable-esophageal-cancer
#2
Takeshi Matsutani, Tsutomu Nomura, Nobutoshi Hagiwara, Akihisa Matsuda, Eiji Uchida
PURPOSE: The purpose of this study is to evaluate the effectiveness of salvage endoscopic argon plasma coagulation (APC) therapy for local failure occurring after definitive chemoradiotherapy (CRT) in patients with inoperable esophageal cancer. PATIENTS AND METHODS: A total of 47 patients with esophageal squamous cell carcinoma received CRT from January 2009 through November 2011 in our hospital. Thirty-five of these patients were excluded because of long-term disease-free status or because they received salvage surgery, systemic chemotherapy, or best supportive care...
July 19, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28727387/focal-cryotherapy-step-by-step-technique-description
#3
Cristina Redondo, Victor Srougi, José Batista da Costa, Mohammed Baghdad, Guillermo Velilla, Igor Nunes-Silva, Sebastien Bergerat, Silvia Garcia-Barreras, François Rozet, Alexandre Ingels, Marc Galiano, Rafael Sanchez-Salas, Eric Barret, Xavier Cathelineau
INTRODUCTION AND OBJECTIVE: Focal cryotherapy emerged as an efficient option to treat favorable and localized prostate cancer (PCa). The purpose of this video is to describe the procedure step by step. MATERIALS AND METHODS: We present the case of a 68 year-old man with localized PCa in the anterior aspect of the prostate. RESULTS: The procedure is performed under general anesthesia, with the patient in lithotomy position. Briefly, the equipament utilized includes the cryotherapy console coupled with an ultrasound system, argon and helium gas bottles, cryoprobes, temperature probes and an urethral warming catheter...
July 20, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28726433/gastric-antral-vascular-ectasia-and-solitary-rectal-ulcer-syndrome-two-rare-diagnoses-as-the-cause-of-anemia-in-a%C3%A2-single-patient-case-report
#4
Lumír Kunovský, Milan Dastych, Radek Kroupa, Beata Hemmelova, Katarina Muckova, Miroslava Chovancova, Lenka Kucerova, Jiri Dolina
Gastric antral vascular ectasia (GAVE) and solitary rectal ulcer syndrome (SRUS) are both mentioned in the literature as rare causes of iron deficiency anemia and gastrointestinal (GI) bleeding. GAVE accounts for up to 4 % of upper non-variceal GI bleeding; SRUS is a rare benign disorder that presents with rectal bleeding. We present the case of a 75-year-old patient who was admitted to our facility with anemia. In the same patient, we encountered chronic bleeding from GAVE and SRUS. Both diagnoses were treated endoscopically: GAVE by argon plasma coagulation and a subsequent treatment with proton pump inhibitors and SRUS by adrenaline injection and clipping, consecutively treated with mesalazine enemas...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28721343/upper-gastrointestinal-bleeding-in-patients-with-end-stage-renal-disease-causes-characteristics-and-factors-associated-with-need-for-endoscopic-therapeutic-intervention
#5
Syed Mudassir Laeeq, Abbas Ali Tasneem, Farina M Hanif, Nasir Hassan Luck, Rajesh Mandhwani, Rajesh Wadhva
BACKGROUND AND OBJECTIVES: The risk of upper gastrointestinal bleeding (UGIB) is increased among the end-stage renal disease (ESRD) patients. The aim of the current study was to describe the causes and characteristics of UGIB in ESRD patients at our center and to assess the need for endoscopic therapeutic intervention (ETI) using Rockall (RS) and Glasgow Blatchford scores (GBS). MATERIAL AND METHODS: All patients with ESRD and UGIB with age ≥14 years were included...
June 2017: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28721219/two-rare-manifestations-of-primary-hyperparathyroidism-paralysis-and-peptic-ulcer-bleeding
#6
Maryam Heidarpour, Mehdi Karami, Pegah Hedayat, Ashraf Aminorroaya
Primary hyperparathyroidism revealed by thoracic spine brown tumor and peptic ulcer bleeding is rare. We presented a case of 33-year-old male patient who was admitted with paraplegia. Thoracic spine magnetic resonance imaging (MRI) showed extradural lesion at T4 level. He underwent surgical decompression in T4. According to histopathologic finding and elevated serum parathormone (PTH) and hypercalcemia (total serum calcium 12.1 mg/dL), the diagnosis of brown tumor was down. Ultrasonography of his neck showed a well-defined lesion of 26 × 14 × 6 mm...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28715388/measuring-the-densities-of-aqueous-glasses-at-cryogenic-temperatures
#7
Chen Shen, Ethan F Julius, Timothy J Tyree, Ritwik Dan, David W Moreau, Robert Thorne
We demonstrate a method for determining the vitreous phase cryogenic temperature densities of aqueous mixtures, and other samples that require rapid cooling, to prepare the desired cryogenic temperature phase. Microliter to picoliter size drops are cooled by projection into a liquid nitrogen-argon (N2-Ar) mixture. The cryogenic temperature phase of the drop is evaluated using a visual assay that correlates with X-ray diffraction measurements. The density of the liquid N2-Ar mixture is adjusted by adding N2 or Ar until the drop becomes neutrally buoyant...
June 28, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28715221/pressure-dependent-light-emission-of-charged-and-neutral-excitons-in-monolayer-mose2
#8
Xinpeng Fu, Fangfei Li, Jung-Fu Lin, Yuan-Bo Gong, Xiaoli Huang, Yanping Huang, Bo Han, Qiang Zhou, Tian Cui
Tailoring the excitonic properties in two-dimensional monolayer transition metal dichalcogenides (TMDs) through strain engineering is an effective means to explore their potential applications in optoelectronics and nanoelectronics. Here we report pressure-tuned photon emission of trions and excitons in monolayer MoSe2 via a diamond anvil cell (DAC) through photoluminescence measurements and theoretical calculations. Under quasi-hydrostatic compressive strain, our results show neutral (X0) and charged (X-) excitons emission of monolayer MoSe2 can be effectively tuned by alcohol mixture vs...
July 17, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28714478/immobilization-of-single-argon-atoms-in-nano-cages-of-two-dimensional-zeolite-model-systems
#9
Jian-Qiang Zhong, Mengen Wang, Nusnin Akter, John D Kestell, Alejandro M Boscoboinik, Taejin Kim, Dario J Stacchiola, Deyu Lu, J Anibal Boscoboinik
The confinement of noble gases on nanostructured surfaces, in contrast to bulk materials, at non-cryogenic temperatures represents a formidable challenge. In this work, individual Ar atoms are trapped at 300 K in nano-cages consisting of (alumino)silicate hexagonal prisms forming a two-dimensional array on a planar surface. The trapping of Ar atoms is detected in situ using synchrotron-based ambient pressure X-ray photoelectron spectroscopy. The atoms remain in the cages upon heating to 400 K. The trapping and release of Ar is studied combining surface science methods and density functional theory calculations...
July 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28712047/shaped-graft-for-aneurysmal-bone-cyst-of-upper-limb-bones
#10
Mohamed F Mostafa, Yasser Y Abed, Sallam I Fawzy
The optimal treatment of aneurysmal bone cyst remains challenging. The aim of this prospective study was to evaluate the results of using bone grafts shaped to the defects caused by aneurysmal bone cysts of upper limb bones. Fifteen patients (12 males and 3 females) with an average age of 12 years (range 6-16 years) were treated for aneurysmal bone cysts of upper limb bones by intralesional resection, argon beam coagulation and shaped bone graft. The grafts were harvested from 14 patients (11 fibulas and 3 iliac bones) and from the mother of one patient (proximal fibula)...
July 15, 2017: Strategies in Trauma and Limb Reconstruction
https://www.readbyqxmd.com/read/28711063/ab-initio-interatomic-potentials-and-the-thermodynamic-properties-of-fluids
#11
Maryna Vlasiuk, Richard J Sadus
Monte Carlo simulations with accurate ab initio interatomic potentials are used to investigate the key thermodynamic properties of argon and krypton in both vapor and liquid phases. Data are reported for the isochoric and isobaric heat capacities, the Joule-Thomson coefficient, and the speed of sound calculated using various two-body interatomic potentials and different combinations of two-body plus three-body terms. The results are compared to either experimental or reference data at state points between the triple and critical points...
July 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28707685/structural-assignment-of-small-cationic-silver-clusters-by-far-infrared-spectroscopy-and-dft-calculations
#12
Johan van der Tol, Dewei Jia, Yejun Li, Valeriy Chernyy, Joost M Bakker, Minh Tho Nguyen, Peter Lievens, Ewald Janssens
The structures of small cationic silver clusters Agn(+) (n = 3-13) are investigated by comparing measured far-infrared multiple photon dissociation spectra of cluster-argon complexes with the calculated harmonic vibrational spectra of different low-energy structural isomers. A global structure search was carried out using the CALYPSO structure prediction method, after which isomers were locally optimized with the meta GGA functional TPSS. The obtained structures of the cationic silver clusters are mostly consistent with earlier ion mobility measurements and photodissociation spectroscopy studies for Agn(+) (n = 3-11) and allowed excluding several structural isomers that were considered in those earlier studies, which illustrates the strength of combining multiple experimental techniques for conclusive structural identification...
July 14, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28707144/efficacy-and-safety-of-argon-plasma-coagulation-in-the-management-of-extensive-chronic-radiation-proctitis-after-pelvic-radiotherapy-for-cervical-carcinoma
#13
Shyama Prem Sudha, D Kadambari
INTRODUCTION: Chronic radiation proctitis (CRP) usually develops 90 days or more after radiation. Currently, there is no standard available for the treatment of CRP. In argon plasma coagulation, monopolar diathermy is used to ionise the argon gas which coagulates the telengiectatic vessels in a noncontact fashion. However, there are very few studies which have reported its use in extensive CRP. We report the efficacy and safety of APC in seven patients with recurrent, extensive grade 3 radiation proctitis...
July 13, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28706297/harmless-effects-of-argon-plasma-on-caudal-fin-regeneration-and-embryogenesis-of-zebrafish-novel-biological-approaches-for-safe-medical-applications-of-bioplasma
#14
Min-Kyung Nam, Goo-Young Kim, Si-Eun Yun, Ja-Young Jang, Yong-Hee Kim, Eun Ha Choi, Seongman Kang, Hyangshuk Rhim
The argon plasma jet (Ar-PJ) is widely used in medical fields such as dermatology and dentistry, and it is considered a promising tool for cancer therapy. However, the in vivo effects of Ar-PJ for medical uses have not yet been investigated, and there are no biological tools to determine the appropriate clinical dosages of Ar-PJ. In this study, we used the caudal fin and embryo of zebrafish as novel in vivo tools to evaluate the biosafety of Ar-PJ. Typically, Ar-PJ is known to induce cell death in two-dimensional (2D) cell culture systems...
July 14, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28702102/evaluation-of-argon-plasma-coagulation-in-healing-of-a-solitary-rectal-ulcer-in-comparison-with-conventional-therapy-a-randomised-controlled-trial
#15
Farzad Jassemi Zergani, Ali Akbar Shaiesthe, Eskandar Hajiani, Jalal Hashemi, Rahim Masjedizadeh, Vaheid Sebghatollahei, Pejman Alavinejad, Ahmad Kadkhodaei, Kambeiz Akhavan, Saeid Seyyedian
INTRODUCTION: Argon plasma coagulation (APC) has been reported to be effective in the treatment of solitary rectal ulcer syndrome (SRUS). However, it has not appeared to be effective in healing ulcers. AIM: This study aimed at assessing the effectiveness of APC in controlling rectal ulcer-induced bleeding, and at examining the ultimate effect of this approach in healing these lesions. MATERIAL AND METHODS: This randomised, controlled trial was conducted on 99 patients with SRUS...
2017: Przegla̜d Gastroenterologiczny
https://www.readbyqxmd.com/read/28700010/argon-plasma-versus-electrofulguration-in-the-treatment-of-anal-and-perianal-condylomata-acuminata-in-patients-with-acquired-immunodeficiency-virus
#16
Eduardo Angelo Braga, Gaspar de Jesus Lopes, Sarhan Sydney Saad
Purpose: To compare the effectiveness of anal and perianal condylomata treatment using argon plasma and electrofulguration. Methods: From January 2013 to April 2014, 37 patients with anal and perianal condylomata, who had been diagnosed through proctological examination, oncotic cytology, polymerase chain reaction (PCR) and histology, underwent treatment with argon plasma and electrofulguration. The perianal and anal regions were divided into two semicircles. Each semicircle was treated using one of the methods by means of simple randomization...
June 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28693018/el-efecto-de-la-panfotocoagulaci%C3%A3-n-con-l%C3%A3-ser-en-edema-macular-diab%C3%A3-tico-con-el-fotocoagulador-pascal%C3%A2-versus-el-l%C3%A3-ser-de-arg%C3%A3-n-convencional
#17
Mohamed M Mahgoub, Tamer A Macky
Objetivo: El objetivo de este estudio fue comparar el efecto de la panfotocoagulación (PFC) en el edema macular diabético (EMD) en pacientes con retinopatía diabética proliferativa (RDP) con el fotocoagulador Pascal® (FP) vs. un fotocoagulador con láser de argón convencional (FLAC). Métodos: Se aleatorizó el uso de FP o FLAC en ochenta ojos con RDP y EMD con afectación central de la mácula. Ambos grupos tuvieron una evaluación de base de mejor agudeza visual corregida y fueron examinados con tomografía de coherencia óptica y angiografía con fluoresceína...
July 11, 2017: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/28690769/endoscopic-resolution-and-recurrence-of-gastric-antral-vascular-ectasia-after-serial-treatment-with-argon-plasma-coagulation
#18
Shashank Garg, Bilal Aslam, Nicholas Nickl
AIM: To evaluate long-term endoscopic resolution and recurrence rate of gastric antral vascular ectasia (GAVE) after argon plasma coagulation (APC) treatment. METHODS: This was an IRB-approved retrospective single center study that included patients endoscopically treated for GAVE between 1/1/2008 to 12/31/2014. The primary and secondary end points of the study were rate of endoscopic resolution of GAVE after APC treatment and recurrence rate of GAVE after endoscopic resolution, respectively...
June 16, 2017: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28688720/preparation-and-evaluation-of-mesoporous-silica-layers-on-radially-elongated-pillars
#19
Shunta Futagami, Takeshi Hara, Heidi Ottevaere, Gino V Baron, Gert Desmet, Wim De Malsche
The present paper describes the application of a sol-gel procedure on radially elongated pillars (REPs) using tetramethoxysilane and methyltrimethoxysilane. After octadecylsilylation, the quality of the porous layered REP (PLREP) columns was evaluated by in-situ determination of migration velocities and band broadening of coumarin dyes with fluorescence microscopy in reversed-phase liquid chromatography. Based on the increase in retention due to the sol-gel process, an increase in accessible specific surface by a factor of 112 was observed...
June 24, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28688426/changing-role-of-carrier-gas-in-formation-of-ethanol-clusters-by-adiabatic-expansion
#20
Mahmoud Abu-Samha, Mauritz J Ryding, Einar Uggerud, Leif J Sæthre, Knut J Børve
Adiabatic expansion of molecular vapors is a celebrated method for producing pure and mixed clusters of relevance in both applied and fundamental studies. The present understanding of the relationship between experimental conditions and the structure of the clusters formed is incomplete. We explore the role of the backing/carrier gas during adiabatic expansion of ethanol vapors with regard to cluster production and composition. Single-component clusters of ethanol were produced over a wide size-range by varying the rare gas (He, Ar) backing pressure, with Ar being more efficient than He in promoting the formation of pure ethanol clusters...
July 7, 2017: Journal of Chemical Physics
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