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https://www.readbyqxmd.com/read/28454170/origin-and-suppression-of-parasitic-signals-in-kagom%C3%A3-lattice-hollow-core-fibers-used-for-srs-microscopy-and-endoscopy
#1
Alberto Lombardini, Esben Ravn Andresen, Alexandre Kudlinski, Ingo Rimke, Hervé Rigneault
Hollow core fibers are considered as promising candidates to deliver intense temporally overlapping picosecond pulses in applications such as stimulated Raman scattering (SRS) microscopy and endoscopy because of their inherent low nonlinearity compared to solid-core silica fibers. Here we demonstrate that, contrary to prior assumptions, parasitic signals are generated in Kagomé lattice hollow core fibers. We identify the origin of the parasitic signals as an interplay between the Kerr nonlinearity of air and frequency-dependent fiber losses...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28454165/light-field-endoscopy-and-its-parametric-description
#2
Jingdan Liu, Daniel Claus, Tingfa Xu, Thorben Keßner, Alois Herkommer, Wolfgang Osten
In this Letter, we demonstrate the application of light field imaging to endoscopy. By introducing a microlens array into the image plane of a conventional endoscope, the 4D light field can be captured in one snapshot. This information can be used to obtain perspective images and to digitally refocus to different planes. These features allow for the recovery of 3D information in minimally invasive surgery. Important optical setup and performance parameters are derived to enable task specific engineering of the light field imaging system...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28449465/application-of-bronchoscope-for-the-placement-of-nasoenteric-feeding-tube-in-patients-with-esophagectomy-a-novel-technique
#3
Hai-Xia Cao, Wei Zhang, Jun Zhang, Xiong-Huai Hua, Jian-Jun Qin, Yin Li
BACKGROUND: Currently the available techniques for the placement of nasoenteric feeding tube (NET), utilizing transnasal gastroscope are fast and tolerable, which is known as the most popular method. However, lots of hospitals don't have this endoscopic system. Bronchoscope, which is the basic respiratory endoscope, not only has the advantages of transnasal endoscopy, but also is popular in common hospitals. We used oxygen instillation as air supply plant of the bronchoscope, which broke its application limitation in digestive tract...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28449428/a-rare-case-of-pancreas-divisum-accompanied-by-acute-pancreatitis-following-endoscopic-hemostasis-for-duodenal-ulcer-bleeding
#4
Yong Hyeok Choi, Soon Man Yoon, Eun Bee Kim, Youngmin Oh, Keunmo Kim, Jisun Lee, Seon Mee Park, Sei Jin Youn
Peptic ulcer bleeding is treated using endoscopic hemostasis using clips or bands. Pancreas divisum (PD), a congenital anomaly of the pancreas, usually has no clinical symptoms; however, pancreatitis may occur if there are disturbances in the drainage of pancreatic secretions. We report an unusual case of PD accompanied by acute pancreatitis, following endoscopic band ligation for duodenal ulcer bleeding. A 48-year-old woman was admitted to our hospital due to melena. An upper endoscopy revealed a small ulcer with oozing adjacent minor papilla...
April 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28449426/-a-case-of-intramural-hematoma-of-the-esophagus-mimicking-acute-coronary-syndrome
#5
Dae Gon Ryu, Cheol Woong Choi, Dae Hwan Kang, Hyung Wook Kim, Dong Il Jeong, Wan Chul Kim, Jae Gyu Shin, Tae Won Lim
Intramural hematoma of the esophagus is a rare condition that can be spontaneous or secondary to trauma, toxic ingestion, or intervention. If it is the spontaneous type, it usually presents initially with epigastric pain, hematemesis or dysphagia. We present a case of intramural hematoma of the esophagus mimicking acute coronary syndrome. A 63-year-old man presented with severe acute chest pain. He has four coronary stents that were inserted five years ago, from a different hospital, and is on dual antiplatelet agents...
April 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28449341/gastrointestinal-idiopathic-granulomatous-gastritis-observed-by-magnifying-narrow-band-imaging-endoscopy
#6
K Kawasaki, K Kurahara, Y Oshiro, K Ohtsu, S Nakamura, T Fuchigami, T Matsumoto
No abstract text is available yet for this article.
May 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28449145/endoscopy-international-open-recently-published
#7
(no author information available yet)
No abstract text is available yet for this article.
May 2017: Endoscopy
https://www.readbyqxmd.com/read/28448862/the-first-case-report-of-failed-single-anastomosis-duodeno-ileal-bypass-converted-to-one-anastomosis-gastric-bypass-mini-gastric-bypass
#8
Sonja Chiappetta, Christine Stier, Oliver Scheffel, Sophia Theodoridou, Rudolf Weiner
INTRODUCTION: The established single-anastomosis-duodeno-ileal bypass with sleeve gastrectomy (SADI-S) is based on a sleeve gastrectomy (SG) as the restrictive part of the procedure. Due to preserved pylorus, SG has the disadvantage of a high-pressure system with de novo or worsening of existing gastroesophageal reflux disease (GERD). CASE PRESENTATION: A female patient presented herself due to protracted GERD and weight regain after multiple bariatric surgeries...
April 18, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28447964/a-rare-cause-of-acute-gastrointestinal-hemorrhage-ileal-lipoma-case-report
#9
E Manna, Fabrizio Maria Frattaroli, E Polettini, Aldo Nunziale, Giuseppe Pappalardo
Primary small bowel tumors account for 1-6% of all Gastrointestinal (G.I.) tract malignancies. Among these pedunculated lipomas are unusual. We report a case of a 66-year-old male with a history of G.I. hemorrhage and acute anemia, negative upper and lower endoscopies and a pedunculated lipoma in distal ileum, revealed by CT enterography. The patient was successfully treated by open surgery. Patients with G.I. hemorrhage and negative upper and lower endoscopies need an accurate evaluation of small bowel. Multislice CT enterography or Magnetic Resonance enteroclysis/ enterography represent the fastest and more accurate tools to obtain an exhaustive evaluation of small bowel...
2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28447062/modified-palliative-biliary-stenting-in-situs-inversus-totalis-patient-with-carcinoma-gallbladder-feasibility-and-technical-details
#10
Nishant Gupta, Pradeep Goyal, Itisha Bansal, Shuo Li, Yogesh Kumar, Sanjay S Baijal
Knowledge of the anatomical variants is essential for all invasive hepatobiliary procedures such as endoscopy, surgery and radiologic interventions. Modification in standard therapeutic interventions may be required based on variant anatomy. We report a technical modification in a 75-year-old female with known situs inversus (SI) totalis with carcinoma gallbladder. Present case highlights the finer technical details of the modified percutaneous transhepatic biliary drainage (PTBD) procedure and biliary stenting in a SI patient with carcinoma gallbladder causing malignant biliary obstruction...
2017: Translational Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28446979/zenker-s-diverticulum-flexible-versus-rigid-repair
#11
REVIEW
Kristen Beard, Lee L Swanström
Zenker's diverticula (ZDs) are a relatively common cause of cervical dysphagia. Diagnosis is best by a good upper GI exam though upper endoscopy should be performed as well. Treatment is either by open, transcervical approaches or trans-oral. Over the past 20 years, transoral approach has mostly replace transcervical approaches due to less pain, no scarring and a rapid recovery. Transoral approaches are either using rigid access or flexible endoscopy. Today, the most common approach is transoral stapling using a 12 mm laparoscopic linear cutting stapler...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28446978/optimizing-the-diagnosis-and-therapy-of-barrett-s-esophagus
#12
REVIEW
Juan A Muñoz-Largacha, Hiran C Fernando, Virginia R Litle
The incidence of Barrett's esophagus (BE) in the Western world has increased over the last decades. BE is considered a premalignant lesion that can progress to esophageal adenocarcinoma (EAC), a highly aggressive malignancy with poor survival rates. The close association between BE and EAC highlights the need for an early diagnosis in order to improve survival and outcomes in this group of patients. Although the evidence for BE screening with conventional endoscopy is controversial and limited by cost-effectiveness studies, screening can be suggested in patients with chronic gastroesophageal reflux disease (GERD) and two or more risk factors for EAC...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28446485/primary-aortojejunal-fistula-a-rare-cause-for-massive-upper-gastrointestinal-bleeding
#13
Sylvester Paulasir, Rhami Khorfan, Christina Harsant, Harry Linne Anderson
A 68-year-old man presented to the emergency department with haematemesis and shock. Upper endoscopy and selective angiography could not identify the source of bleeding. He underwent selective embolisation of the gastroduodenal artery. The patient then had a period of about 24 hours with relative haemodynamic stability before having another episode of massive upper gastrointestinal bleed. A second attempt to embolise the common hepatic artery and distal coeliac axis was unsuccessful. Hence, he was urgently taken to the operating room for exploratory laparotomy...
April 26, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28445903/patient-reported-adverse-events-after-colonoscopy-in-norway
#14
Geir Hoff, Thomas de Lange, Michael Bretthauer, Magne Buset, Stein Dahler, Fred-Arne Halvorsen, Jörg Michael Halwe, Mathis Heibert, Ole Høie, Øystein Kjellevold, Volker Moritz, Per Sandvei, Birgitte Seip, Lars Aabakken, Øyvind Holme
Background and aims Patient-reported outcome measures are increasingly important in healthcare. European guidelines have recommended inclusion of patient feedback to capture adverse events due to colonoscopy, but this is rarely implemented. Methods The Norwegian Quality Assurance network for endoscopy (Gastronet) collects patient-reported outcome for colonoscopies. Free-text comments on patient reports from January to December 2015 were characterized as positive or negative. All negative free-text comments were scrutinized for information that might suggest colonoscopy-related adverse events...
April 26, 2017: Endoscopy
https://www.readbyqxmd.com/read/28445902/a-3d-printed-cap-with-sideoptics-for-colonoscopy-a-randomized-ex-vivo-study
#15
Benjamin M Walter, Alexander Hann, Rena Frank, Alexander Meining
Background Adequate polyp detection is crucial to colonoscopy; however, detection can be impaired. In particular, flat polyps located behind folds or near the colonic flexures appear to be a problem. We present a cheap and easily adjustable 3D-printed tool to enhance the view of a standard colonoscope using additional commercially available sideoptics. Materials and methods A cap adjustable to a standard endoscope was printed by a 3 D printer and had two microcameras fixed to offer two additional views...
April 26, 2017: Endoscopy
https://www.readbyqxmd.com/read/28445591/screening-endoscopy-finds-high-prevalence-of-helicobacter-pylori-and-intestinal-metaplasia-in-korean-american-with-limited-access-to-health-care
#16
Yanghee Woo, Carolyn E Behrendt, Garrick Trapp, Jae Geun Hyun, Tamas Gonda, Yuman Fong, Timothy Wang
BACKGROUND: Gastric cancer (GC) is the leading cause of cancer death among Korean Americans. Prevention and early detection is improved by screening. METHODS: Between September 2013 and March 2015, ethnic Koreans age 40 or older without history or symptoms of GC and without upper endoscopy (UE) during previous 3 years were enrolled. Participants were offered screening with GC risk assessment followed by UE with biopsies. RESULTS: Risk assessment was provided to 146 participants (age 55...
April 26, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28445275/cases-of-primary-malignant-melanoma-and-melanocytosis-of-the-esophagus-observed-by-magnifying-endoscopy-application-to-differential-diagnosis-case-series
#17
Hiroyuki Ohnuma, Kazuma Ishikawa, Masahiro Hirakawa, Shohei Kikuchi, Yasushi Sato, Koji Miyanishi, Junji Kato
RATIONALE: Primary malignant melanoma of the esophagus (PMME) is a rare disease with an extremely poor prognosis. In contrast, melanocytosis is a benign condition defined as melanocytic proliferation with melanin deposition. PMME is often accompanied by melanocytosis, but differentiating between them is difficult because of their similar appearance. PATIENT CONCERNS: Here, we reported 3 PMME cases, 2 with melanocytosis. DIAGNOSES: Magnifying endoscopy revealed characteristic non-uniform pigmented spots along deformed intrapapillary capillary loops (IPCLs) in PMME, while melanocytosis showed fine granule-like or linearly arranged spots and intact IPCLs...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28445255/peutz-jeghers-syndrome-with-intermittent-upper-intestinal-obstruction-a-case-report-and-review-of-the-literature
#18
Shou-Xing Duan, Guang-Huan Wang, Jun Zhong, Wen-Hui Ou, Ma-Xian Fu, Fu-Sheng Wang, Shu-Hua Ma, Jian-Hong Li
RATIONALE: Peutz-Jeghers syndrome (PJS) is an autosomal dominant genetic syndrome characterized by a unique type of gastrointestinal hamartomatous polyp associated with oral and anal mucocutaneous pigmentations. Peutz-Jeghers polyps occur most numerously in the small intestine but frequently in the colon and stomach, only a few cases have been reported in the duodenum. PATIENT CONCERN: A further family history survey discovered 10 out of 14 members of the family (in 4 generations) had mucocutaneous pigmentations, but many of them were living in rural areas where they had no access to specialized medical services, so none were checked with endoscopy for polyps of hamartoma...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28444987/platelet-count-spleen-length-and-platelet-count-to-spleen-length-ratio-for-the-diagnosis-of-oesophageal-varices-in-people-with-chronic-liver-disease-or-portal-vein-thrombosis
#19
REVIEW
Agostino Colli, Juan Cristóbal Gana, Jason Yap, Thomasin Adams-Webber, Natalie Rashkovan, Simon C Ling, Giovanni Casazza
BACKGROUND: Current guidelines recommend screening of people with oesophageal varices via oesophago-gastro-duodenoscopy at the time of diagnosis of hepatic cirrhosis. This requires that people repeatedly undergo unpleasant invasive procedures with their attendant risks, although half of these people have no identifiable oesophageal varices 10 years after the initial diagnosis of cirrhosis. Platelet count, spleen length, and platelet count-to-spleen length ratio are non-invasive tests proposed as triage tests for the diagnosis of oesophageal varices...
April 26, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28444800/endoscopic-meatus-scoring-scale-versus-sniff-test-to-predict-insertability-before-transnasal-endoscopy-a-prospective-randomized-study
#20
Chi-Tan Hu, Wei-Yi Lei, Jen-Shung Lin, Jui-Sheng Hung
BACKGROUND AND AIM: Sniff test is a common method before unsedated transnasal EGD (UT-EGD) to select a nostril insertion site. Yet, there is no objective method to select a more specific meatus insertion tract for anesthesia and insertion. We devised a endoscopic meatus scoring scale by anterior meatuscopy to select the most optimal meatus insertion tract. We hypothesized that meatuscopy instead of sniff test might improve tolerance and reduce adverse events during nasal anesthesia and UT-EGD...
April 26, 2017: Journal of Gastroenterology and Hepatology
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