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https://www.readbyqxmd.com/read/28337479/technical-feasibility-of-line-assisted-complete-closure-technique-for-large-mucosal-defects-after-colorectal-endoscopic-submucosal-dissection
#1
Minoru Kato, Yoji Takeuchi, Yasushi Yamasaki, Masamichi Arao, Sho Suzuki, Taro Iwatsubo, Kenta Hamada, Yusuke Tonai, Satoki Shichijo, Noriko Matsuura, Hiroko Nakahira, Takashi Kanesaka, Tomofumi Akasaka, Noboru Hanaoka, Koji Higashino, Noriya Uedo, Ryu Ishihara, Hiroyasu Iishi
Background and study aims Complete closure of large mucosal defects after colorectal endoscopic submucosal dissection (C-ESD) is considered impossible in most cases because of the limited width of the open clip. We therefore invented a simple closure technique using clip-and-line, named "line-assisted complete closure (LACC)", and assessed its technical feasibility. Patients and methods Between January and February 2016, we performed LACC in 11 patients after C-ESD and included them in this retrospective feasibility study...
January 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28277895/serrated-polyps-a-concealed-but-prevalent-precursor-of-colorectal-cancer
#2
Henrik Thorlacius, Yoji Takeuchi, Takashi Kanesaka, Otto Ljungberg, Noriya Uedo, Ervin Toth
Serrated polyps have long been considered to lack malignant potential but accumulating data suggest that these lesions may cause up to one-third of all sporadic colorectal cancer. Serrated polyps are classified into three subtypes, including sessile serrated adenomas/polyps (SSA/Ps), traditional serrated adenomas (TSAs), and hyperplastic polyps (HPs). SSA/P and TSA harbour malignant potential but TSA represents only 1-2%, wheras SSA/P constitute up to 20% of all serrated lesions. HPs are most common (80%) of all serrated polyps but are considered to have a low potential of developing colorectal cancer...
March 9, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28258560/new-subtype-of-gastric-adenocarcinoma-mixed-fundic-and-pyloric-mucosa-type-adenocarcinoma
#3
Takashi Kanesaka, Noriya Uedo, Kenshi Yao, Hiroshi Tanabe, Yasushi Yamasaki, Yoji Takeuchi, Akinori Iwashita, Yasuhiko Tomita
A 73-year-old woman underwent upper endoscopic screening that revealed a 30-mm superficial elevated lesion in the anterior wall of the upper gastric body. The lesion had a whitish color and coarse granular surface in conventional white light endoscopy. Magnifying narrow-band imaging indicated irregular microvascular and microsurface patterns within a demarcation line. The microvessels had a distorted polygonal shape within the area surrounded by the marginal crypt epithelium. The patient underwent endoscopic resection...
March 3, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28192823/incomplete-resection-rate-of-cold-snare-polypectomy-a-prospective-single-arm-observational-study
#4
Noriko Matsuura, Yoji Takeuchi, Takeshi Yamashina, Takashi Ito, Kenji Aoi, Kengo Nagai, Takashi Kanesaka, Fumi Matsui, Mototsugu Fujii, Tomofumi Akasaka, Noboru Hanaoka, Koji Higashino, Yasuhiko Tomita, Yuri Ito, Ryu Ishihara, Hiroyasu Iishi, Noriya Uedo
Background and study aims Cold snare polypectomy (CSP) is considered to be safe for the removal of subcentimeter colorectal polyps. This study aimed to determine the rate of incomplete CSP resection for subcentimeter neoplastic polyps at our center. Patients and methods Patients with small or diminutive adenomas (diameter 1 - 9 mm) were recruited to undergo CSP until no polyp was visible. After CSP, a 1 - 3 mm margin around the resection site was removed using endoscopic mucosal resection. The polyps and resection site marginal specimens were microscopically evaluated...
March 2017: Endoscopy
https://www.readbyqxmd.com/read/28181701/primary-gastric-choriocarcinoma-developed-in-a-helicobacter-pylori-negative-patient
#5
Taro Iwatsubo, Noriya Uedo, Kazunobu Ishibashi
A woman in her fifties underwent esophagogastroduodenoscopy, which revealed a whitish large laterally spreading lesion with reddish nodule at the greater curvature (Fig. 1). The patient had no history of Helicobacter pylori (H. pylori) eradication therapy. Anti-H. pylori antibody was negative (<3 U/mL) and no H. pylori-like organism was detected in any of the biopsy specimens. Fundic-gland polyps were seen in the non-atrophic gastric mucosa. No lymph node and distant metastases were found by computed tomography scan...
February 9, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28152974/endoscopic-imaging-modalities-for-diagnosing-invasion-depth-of-superficial-esophageal-squamous-cell-carcinoma-a-systematic-review-and-meta-analysis
#6
REVIEW
Ryu Ishihara, Noriko Matsuura, Noboru Hanaoka, Sachiko Yamamoto, Tomofumi Akasaka, Yoji Takeuchi, Koji Higashino, Noriya Uedo, Hiroyasu Iishi
BACKGROUND: Diagnosis of cancer invasion depth is crucial for selecting the optimal treatment strategy in patients with gastrointestinal cancers. We conducted a meta-analysis to determine the utilities of different endoscopic modalities for diagnosing invasion depth of esophageal squamous cell carcinoma (SCC). METHODS: We conducted a comprehensive search of MEDLINE, Cochrane Central, and Ichushi databases to identify studies evaluating the use of endoscopic modalities for diagnosing invasion depth of superficial esophageal SCC...
February 2, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28068699/line-assisted-complete-closure-of-duodenal-mucosal-defects-after-underwater-endoscopic-mucosal-resection
#7
Yasushi Yamasaki, Yoji Takeuchi, Noriya Uedo, Noboru Hanaoka, Koji Higashino, Ryu Ishihara, Hiroyasu Iishi
No abstract text is available yet for this article.
February 2017: Endoscopy
https://www.readbyqxmd.com/read/28042250/underwater-endoscopic-mucosal-resection-of-a-condyloma-acuminatum-of-the-anal-canal
#8
Kenta Hamada, Noriya Uedo, Yasuhiko Tomita, Ryu Ishihara
No abstract text is available yet for this article.
2017: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/28032233/development-of-an-e-learning-system-for-teaching-endoscopists-how-to-diagnose-early-gastric-cancer-basic-principles-for-improving-early-detection
#9
REVIEW
Kenshi Yao, Noriya Uedo, Manabu Muto, Hideki Ishikawa
We developed an internet e-learning system in order to improve the ability of endoscopists to diagnose gastric cancer at an early stage. The efficacy of this system at expanding knowledge and providing invaluable experience regarding the endoscopic detection of early gastric cancer was demonstrated through an international multicenter randomized controlled trial. However, the contents of the system have not yet been fully described in the literature. Accordingly, we herein introduce the contents and their principles, which comprise three main subjects: technique, knowledge, and experience...
March 2017: Gastric Cancer
https://www.readbyqxmd.com/read/27977890/scissor-type-knife-significantly-improves-self-completion-rate-of-colorectal-endoscopic-submucosal-dissection-single-center-prospective-randomized-trial
#10
Takeshi Yamashina, Yoji Takeuchi, Kengo Nagai, Noriko Matsuura, Takashi Ito, Mototsugu Fujii, Noboru Hanaoka, Koji Higashino, Noriya Uedo, Ryu Ishihara, Hiroyasu Iishi
BACKGROUND AND AIM: Colorectal endoscopic submucosal dissection (C-ESD) is recognized as a difficult procedure. Recently, scissors-type knives were launched to reduce the difficulty of C-ESD. The aim of this study was to evaluate the efficacy and safety of the combined use of a scissors-type knife and a needle-type knife with a water-jet function (WJ needle-knife) for C-ESD compared with using the WJ needle-knife alone. METHODS: This was a prospective randomized controlled trial in a referral center...
December 15, 2016: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/27938786/surveillance-of-patients-with-gastric-precancerous-conditions
#11
REVIEW
Jorge Lage, Noriya Uedo, Mário Dinis-Ribeiro, Kenshi Yao
Intestinal-type gastric adenocarcinoma arises from a multistep process starting with Helicobacter pylori infection followed by gastric atrophy, gastric intestinal metaplasia and dysplasia. Indeed, patients with gastric precancerous conditions or lesions (GPC) are at increased risk to develop gastric cancer even in regions with low incidence. Thus, the identification and surveillance of a high risk subgroup could lead to the diagnosis of cancer at early stage and improve survival. However, both endoscopic and histological accuracy and interobserver agreement in the diagnosis of GPC are still far from optimal...
December 2016: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/27807641/long-term-outcomes-of-endoscopic-submucosal-dissection-for-early-gastric-cancer-a-multicenter-collaborative-study
#12
MULTICENTER STUDY
Satoshi Tanabe, Kenji Ishido, Takayuki Matsumoto, Takashi Kosaka, Ichiro Oda, Haruhisa Suzuki, Junko Fujisaki, Hiroyuki Ono, Noboru Kawata, Tsuneo Oyama, Akiko Takahashi, Hisashi Doyama, Masaaki Kobayashi, Noriya Uedo, Kenta Hamada, Takashi Toyonaga, Fumiaki Kawara, Shinji Tanaka, Yoshikazu Yoshifuku
OBJECTIVE: The indications for endoscopic submucosal dissection (ESD) in patients with early gastric cancer (EGC) have been expanded. However, the long-term outcomes of ESD remain unclear. We retrospectively investigated the long-term outcomes of ESD in patients with EGC. METHODS: We retrospectively studied patients with EGC who underwent ESD at 11 institutions between January 2003 and December 2010. A total of 6456 patients (7979 lesions) who met the absolute indications for ESD and 4202 patients (5781 lesions) who met the expanded indications for ESD were studied...
March 2017: Gastric Cancer
https://www.readbyqxmd.com/read/27747281/first-reports-of-esophageal-adenocarcinoma-with-white-globe-appearance-in-japanese-and-caucasian-patients
#13
Yusuke Tonai, Ryu Ishihara, Yasushi Yamasaki, Takashi Kanesaka, Sachiko Yamamoto, Tomofumi Akasaka, Noboru Hanaoka, Yoji Takeuchi, Koji Higashino, Noriya Uedo, Yasuhiko Tomita, Hiroyasu Iishi
Background and study aims: Better endoscopic diagnosis in case of Barrett's esophagus is still needed. White globe appearance (WGA) is a novel endoscopic marker for gastric adenocarcinoma, with high sensitivity for differentiating between gastric cancer/high-grade dysplasia and other lesions. We report 2 cases of esophageal adenocarcinoma with WGA. In Case 1, esophagogastroduodenoscopy (EGD) revealed a 10-mm esophageal adenocarcinoma in a 48-year-old Japanese woman with short-segment Barrett's esophagus. A small (< 1 mm) white globular lesion, typical of WGA, was observed under the epithelium by magnifying narrow-band imaging...
October 2016: Endoscopy International Open
https://www.readbyqxmd.com/read/27708526/endoscopic-submucosal-dissection-for-anal-intraepithelial-neoplasia
#14
Junichi Miyazaki, Noriya Uedo, Zhao Liang Li, Shohei Matsuo
No abstract text is available yet for this article.
October 2016: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/27696551/pethidine-hydrochloride-is-a-better-sedation-method-for-pharyngeal-observation-by-transoral-endoscopy-compared-with-no-sedation-and-midazolam
#15
Yasushi Yamasaki, Ryu Ishihara, Noboru Hanaoka, Noriko Matsuura, Takashi Kanesaka, Tomofumi Akasaka, Minoru Kato, Kenta Hamada, Yusuke Tonai, Sachiko Yamamoto, Yoji Takeuchi, Koji Higashino, Noriya Uedo, Yuri Ito, Masahiko Yano, Hiroyasu Iishi
BACKGROUND AND AIM: Standard surveillance methods for pharyngeal cancer have not been established. We conducted a randomized controlled trial to investigate the best sedation method for pharyngeal observation using transoral endoscopy. METHODS: In total, 120 patients who underwent surveillance or diagnostic examinations for esophageal cancer were enrolled and divided equally into three groups (no sedation, midazolam, or pethidine hydrochloride). In the midazolam group, midazolam was given i...
October 3, 2016: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/27668074/clinical-relevance-of-aberrant-polypoid-nodule-scar-after-endoscopic-submucosal-dissection
#16
Vitor Arantes, Noriya Uedo, Moises Salgado Pedrosa, Yasuhiko Tomita
AIM: To describe a series of patients with aberrant polypoid nodule scar developed after gastric endoscopic submucosal dissection (ESD), and to discuss its pathogenesis and clinical management. METHODS: We reviewed retrospectively the endoscopic database of two academic institutions located in Brazil and Japan and searched for all patients that underwent ESD to manage gastric neoplasms from 2003 to 2015. The criteria for admission in the study were: (1) successful en bloc ESD procedure with R0 and curative resection confirmed histologically; (2) postoperative endoscopic examination with identification of a polypoid nodule scar (PNS) at ESD scar; (3) biopsies of the PNS with hyperplastic or regenerative tissue, reviewed by two independent experienced gastrointestinal pathologists, one from each Institution...
September 16, 2016: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/27626215/-take-your-polyp-for-a-walk-endoscopic-retrieval-of-multiple-colon-polyps-using-a-clip-and-line
#17
Tomofumi Akasaka, Yoji Takeuchi, Yasushi Yamasaki, Noboru Hanaoka, Noriya Uedo, Ryu Ishihara, Hiroyashu Iishi
No abstract text is available yet for this article.
2016: Endoscopy
https://www.readbyqxmd.com/read/27573777/endoluminal-diagnosis-of-early-gastric-cancer-and-its-precursors-bridging-the-gap-between-endoscopy-and-pathology
#18
REVIEW
Noriya Uedo, Kenshi Yao
Although dye-based and image-enhanced endoscopic techniques have revolutionized endoscopic diagnosis, conventional white light endoscopy still plays an important role in the diagnosis of early gastric cancer (EGC) during routine endoscopy. Chromoendoscopy reveals morphological characteristics of the mucosal lesions by enhancing mucosal contrast, while narrow-band imaging (NBI) facilitates detailed evaluation of the vascular architecture and surface features. Positive diagnostic findings of EGC on white light imaging and indigo carmine chromoendoscopy are a sharply demarcated lesion and irregularity in surface morphology or color...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27556090/endoscopic-surveillance-of-head-and-neck-cancer-in-patients-with-esophageal-squamous-cell-carcinoma
#19
Minoru Kato, Ryu Ishihara, Kenta Hamada, Yusuke Tonai, Yasushi Yamasaki, Noriko Matsuura, Takashi Kanesaka, Sachiko Yamamoto, Tomofumi Akasaka, Noboru Hanaoka, Yoji Takeuchi, Koji Higashino, Noriya Uedo, Hiroyasu Iishi
BACKGROUND AND STUDY AIMS: Multiple squamous cell carcinomas (SCCs) frequently arise in the upper aerodigestive tract, referred to as the field cancerization phenomenon. The aim of this study was to elucidate the detailed clinical features of second primary head and neck (H&N) SCCs arising in patients with esophageal SCC. PATIENTS AND METHODS: A total of 818 patients underwent endoscopic resection for superficial esophageal cancer between January 2006 and December 2013...
July 2016: Endoscopy International Open
https://www.readbyqxmd.com/read/27556074/a-comparative-study-of-grasping-type-scissors-forceps-and-insulated-tip-knife-for-endoscopic-submucosal-dissection-of-early-gastric-cancer-a-randomized-controlled-trial
#20
Kengo Nagai, Noriya Uedo, Takeshi Yamashina, Fumi Matsui, Noriko Matsuura, Takashi Ito, Sachiko Yamamoto, Noboru Hanaoka, Yoji Takeuchi, Koji Higashino, Ryu Ishihara, Hiroyasu Iishi
BACKGROUND AND STUDY AIMS: Endoscopic submucosal dissection (ESD) for early gastric cancer (EGC) is technically difficult for beginners. Few comparative studies of technical feasibility, efficacy, and safety using various devices have been reported. This study evaluated the feasibility, efficacy, and safety of ESD for EGC < 2 cm using grasping-type scissors forceps (GSF) or insulated-tip knife (IT2) for three resident endoscopists. PATIENTS AND METHODS: This was a randomized phase II study in a cancer referral center...
June 2016: Endoscopy International Open
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