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| 1 | Feasibility of cold snare polypectomy in Japan: A pilot study显示文摘AIM: To investigate the feasibility of cold snare polypectomy(CSP) in Japan.METHODS: The outcomes of 234 non-pedunculated polyps smaller than 10 mm in 61 patients who underwent CSP in a Japanese referral center were retrospectively analyzed. The cold snare polypectomies were performed by nine endoscopists with no prior experience in CSP using an electrosurgical snare without electrocautery.RESULTS: CSPs were completed for 232 of the 234 polyps. Two(0.9%) polyps could not be removed without electrocautery. Immediate postpolypectomy bleeding requiring endoscopic hemostasis occurred in eight lesions(3.4%; 95%CI: 1.1%-5.8%), but all were easily managed. The incidence of immediate bleeding after CSP for small polyps(6-9 mm) was significantly higher than that of diminutive polyps(≤ 5 mm; 15% vs 1%, respectively). Three(5%) patients complained of minor bleeding after the procedure but required no intervention. The incidence of delayed bleeding requiringendoscopic intervention was 0.0%(95%CI: 0.0%-1.7%). In total, 12% of the resected lesions could not be retrieved for pathological examination. Tumor involvement in the lateral margin could not be histologically assessed in 70(40%) lesions.CONCLUSION: CSP is feasible in Japan. However, immediate bleeding, retrieval failure and uncertain assessment of the lateral tumor margin should not be underestimated. Careful endoscopic diagnosis before and evaluation of the tumor residue after CSP are recommended when implementing CSP in Japan. | Yoji Takeuchi Takeshi Yamashina Noriko Matsuura Takashi Ito Mototsugu Fujii Kengo Nagai Fumi Matsui Tomofumi Akasaka Noboru Hanaoka Koji Higashino Hiroyasu Iishi Ryu Ishihara Henrik Thorlacius Noriya Uedo | 2015 | World Journal of Gastrointestinal Endoscopy2015，7，17： | 14 |
| 2 | Pink-color sign in esophageal squamous neoplasia, and speculation regarding the underlying mechanism显示文摘AIM:To investigate the reasons for the occurrence of the pink-color sign of iodine-unstained lesions. METHODS:In chromoendoscopy, the pink-color sign of iodine-unstained lesions is recognized as useful for the diagnosis of esophageal squamous cell carcinoma. Patients with superficial esophageal neoplasms treated by endoscopic resection were included in the study. Areas of mucosa with and without the pink-color sign were evaluated histologically. The following histologic features that were possibly associated with the pinkcolor sign were evaluated. The keratinous layer and basal cell layer were classified as present or absent. Cellular atypia was classified as high grade, moderate grade or low grade, based on nuclear irregularity, mitotic figures, loss of polarity, chromatin pattern and nuclear/cytoplasmic ratio. Vascular change was assessed based on dilatation, tortuosity, caliber change and variability in shape. Vessels with these four findings were classified as positive for vascular change. Endoscopic images of the lesions were captured immediately after iodine staining, 2-3 min after iodine staining and after complete fading of iodine staining. Quantitative analysis of color changes after iodine staining was also performed. RESULTS:A total of 61 superficial esophageal neoplasms in 54 patients were included in the study. The lesions were located in the cervical esophagus in one case, the upper thoracic esophagus in 10 cases, the mid-thoracic esophagus in 33 cases, and the lower thoracic esophagus in 17 cases. The median diameter of the lesions was 20 mm (range:2-74 mm). Of the 61 lesions, 28 were classified as pink-color sign positive and 33 as pink-color sign negative. The histologic diagnosis was high-grade intraepithelial neoplasia (HGIN) or cancer invading into the lamina propria in 26 of the 28 pink-color sign positive lesions. There was a significant association between pink-color sign positive epithelium and HGIN or invasive cancer (P = 0.0001). Univariate analyses found that absence of the keratinous layer and cellular atypia were significantly associated with the pink-color sign. After Bonferroni correction, there were no significant associations between the pink-color sign and presence of the basal membrane or vascular change. Multivariate analyses found that only absence of the keratinous layer was independently associated with the pink-color sign (OR = 58.8, 95%CI:5.5-632).Quantitative analysis was performed on 10 superficial esophageal neoplasms with both pink-color sign positive and negative areas in 10 patients. Pink-color sign positive mucosa had a lower mean color value in the late phase (pinkish color) than in the early phase (yellowish color), and had similar mean color values in the late and final phases. These findings suggest that pinkcolor positive mucosa underwent color fading from the color of the iodine (yellow) to the color of the mucosa (pink) within 2-3 min after iodine staining. Pink-color sign negative mucosa had similar mean color values in the late and early phases (yellowish color), and had a lower mean color value in the final phase (pinkish color) than in the late phase. These findings suggest that pink-color sign negative mucosa did not undergo color fading during the 2-3 min after iodine staining, and underwent color fading only after spraying of sodium thiosulfate. CONCLUSION:The pink-color sign was associated with absence of the keratinous layer. This sign may be caused by early fading of iodine staining. | Ryu Ishihara Hiromitsu Kanzaki Hiroyasu Iishi Kengo Nagai Fumi Matsui Takeshi Yamashina Noriko Matsuura Takashi Ito Mototsugu Fujii Sachiko Yamamoto Noboru Hanaoka Yoji Takeuchi Koji Higashino Noriya Uedo Masaharu Tatsuta Yasuhiko Tomita Shingo Ishiguro | 2013 | World Journal of Gastroenterology2013，19，27： | 10 |
| 3 | Magnifying Narrowband Imaging Is More Accurate Than Conventional White-Light Imaging in Diagnosis of Gastric Mucosal Cancer显示文摘 | Yasumasa Ezoe Manabu Muto Noriya Uedo Hisashi Doyama Kenshi Yao Ichiro Oda Kazuhiro Kaneko Yoshiro Kawahara Chizu Yokoi Yasushi Sugiura Hideki Ishikawa Yoji Takeuchi Yoshibumi Kaneko Yutaka Saito | 2011 | Gastroenterology2011，，6： | 4 |
| 4 | Clinical relevance of aberrant polypoid nodule scar after endoscopic submucosal dissection显示文摘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. Data were examined for patient demographics, Helicobacter pylori status, precise neoplastic lesion location in the stomach, tumor size, histopathological assessment of the ESD specimen, and postoperative information including medical management, endoscopic and histological findings, and clinical outcome.RESULTS A total of 14 patients(10 men/4 women) fulfilled the inclusion criteria and were enrolled in this study. One center contributed with 8 cases out of 60 patients(13.3%) from 2008 to 2015. The second center contributed with 6 cases(1.7%) out of 343 patients from 2003 to 2015. Postoperative endoscopic follow-up revealed similar findings in all patients: A protruded polypoid appearing nodule situated in the center of the ESD scar surrounded by convergence of folds. Biopsies samples were taken from PNS, and histological assessment revealed in all cases regenerative and hyperplastic tissue, without recurrent tumor or dysplasia. Primary neoplastic lesions were located in the antrum in 13 patients and in the angle in one patient. PNS did not develop in any patient after ESD undertaken for tumors located in the corpus, fundus or cardia. All patients have been followed systematically on an annual basis and no malignant recurrence in the ESD scar has been identified(mean follow-up period: 45 mo).CONCLUSION PNS may occur after ESD for antral lesions and endoscopically look concerning, especially for the patient or the family doctor. However, as long as curative R0 resection was successfully achieved and histology demonstrates only regenerative and hyperplastic tissue, PNS should be viewed as a benign alteration that does not require any type of intervention, other than endoscopic surveillance. | Vitor Arantes Noriya Uedo Moises Salgado Pedrosa Yasuhiko Tomita | 2016 | World Journal of Gastrointestinal Endoscopy2016，8，17： | 4 |
| 5 | Clinical features and outcomes of delayed perforation after endoscopic submucosal dissection for early gastric cancer显示文摘 | N. Hanaoka N. Uedo R. Ishihara K. Higashino Y. Takeuchi T. Inoue R. Chatani M. Hanafusa Y. Tsujii H. Kanzaki N. Kawada H. Iishi M. Tatsuta Y. Tomita I. Miyashiro M. Yano | 2010 | Endoscopy2010，，12： | 3 |
| 6 | Management of local recurrence after endoscopic resection of neoplastic colonic polyps显示文摘A proportion of neoplastic polyps are incompletely resected, resulting in local recurrence, especially after resection of large polyps or piecemeal resection. Local recurrences that develop after endoscopic resection of intramucosal neoplasms that lacked risk factors for lymph node metastasis or positive vertical margins are usually treated endoscopically. Endoscopic submucosal dissection(ESD) is indicated for local residual or recurrent early carcinomas after endoscopic resection. However, ESD for such recurrent lesions is technically difficult and is typically a lengthy procedure. Underwater endoscopic mucosal resection(UEMR), which was developed in 2012, is suitable for recurrent or residual lesions and reportedly achieves superior en bloc resection rates and endoscopic complete resection rates than conventional EMR. However, a large recurrent lesion is a negative independent predictor of successful en bloc resection and of complete endoscopic removal. We therefore perform UEMR for relatively small(≤ 10-15 mm) recurrent lesions and ESD for larger lesions. | Satoki Shichijo Yoji Takeuchi Noriya Uedo Ryu Ishihara | 2018 | World Journal of Gastrointestinal Endoscopy2018，10，12： | 3 |
| 7 | Delayed perforation: A hazardous complication of endoscopic resection for non‐ampullary duodenal neoplasm显示文摘 | Takuya Inoue Noriya Uedo Takeshi Yamashina Sachiko Yamamoto Noboru Hanaoka Yoji Takeuchi Koji Higashino Ryu Ishihara Hiroyasu Iishi Masaharu Tatsuta Hidenori Takahashi Hidetoshi Eguchi Hiroaki Ohigashi | 2014 | Digestive Endoscopy2014，，2： | 3 |
| 8 | A novel videoendoscopy system by using autofluorescence and reflectance imaging for diagnosis of esophagogastric cancers <ce:link locator='fx1'/>显示文摘 | Noriya Uedo Hiroyasu Iishi Masaharu Tatsuta Takuya Yamada Hideharu Ogiyama Kazuho Imanaka Naotoshi Sugimoto Koji Higashino Ryu Ishihara Hiroyuki Narahara Shingo Ishiguro | 2005 | Gastrointestinal Endoscopy2005，，4： | 2 |
| 9 | Longterm outcomes after endoscopic mucosal resection for early gastric cancer显示文摘 | Noriya Uedo Hiroyasu Iishi Masaharu Tatsuta Ryu Ishihara Koji Higashino Yoji Takeuchi Kazuho Imanaka Takuya Yamada Sachiko Yamamoto Shunsuke Yamamoto Hideaki Tsukuma Shingo Ishiguro | 2006 | Gastric Cancer2006，，2： | 2 |
| 10 | Intralesional steroid injection to prevent stricture after endoscopic submucosal dissection for esophageal cancer: a controlled prospective study显示文摘 | N. Hanaoka R. Ishihara Y. Takeuchi N. Uedo K. Higashino T. Ohta H. Kanzaki M. Hanafusa K. Nagai F. Matsui H. Iishi M. Tatsuta Y. Ito | 2012 | Endoscopy2012，，11： | 2 |
| 11 | Longterm outcomes after endoscopic mucosal resection for early gastric cancer显示文摘 | Noriya Uedo Hiroyasu Iishi Masaharu Tatsuta Ryu Ishihara Koji Higashino Yoji Takeuchi Kazuho Imanaka Takuya Yamada Sachiko Yamamoto Shunsuke Yamamoto Hideaki Tsukuma Shingo Ishiguro | 2006 | Gastric Cancer2006，，2： | 2 |
| 12 | Comparison of EMR and endoscopic submucosal dissection for en bloc resection of early esophageal cancers in Japan显示文摘 | Ryu Ishihara Hiroyasu Iishi Noriya Uedo Yoji Takeuchi Sachiko Yamamoto Takuya Yamada Eriko Masuda Koji Higashino Motohiko Kato Hiroyuki Narahara Masaharu Tatsuta | 2008 | Gastrointestinal Endoscopy2008，，6： | 2 |
| 13 | H. pylori eradication did not improve dysregulation of specific oncogenic miRNAs in intestinal metaplastic glands显示文摘 | Akiko Shiotani Noriya Uedo Hiroyasu Iishi Takahisa Murao Tomoko Kanzaki Yoshiki Kimura Tomoari Kamada Hiroaki Kusunoki Kazuhiko Inoue Ken Haruma | 2012 | Journal of Gastroenterology2012，，9： | 2 |
| 14 | Current situation of endoscopic submucosal dissection forsuperficial neolasms in the upper digestive tract in East Asian countries:a questionnaire survey显示文摘 | Uedo N Jung HY Fujishiro M | | 0，，01： | 1 |
| 15 | A novel videoendoscopy system by using autofluorescence and reflectance imaging for diagnosis of esophagogastric cancers <ce:link locator='fx1'/>显示文摘 | Noriya Uedo Hiroyasu Iishi Masaharu Tatsuta Takuya Yamada Hideharu Ogiyama Kazuho Imanaka Naotoshi Sugimoto Koji Higashino Ryu Ishihara Hiroyuki Narahara Shingo Ishiguro | 2005 | Gastrointestinal Endoscopy2005，，4： | 1 |
| 16 | Reduction in salivary cortisol level by music therapy during colonoscopic examination显示文摘 | Uedo N Ishikawa H Morimoto K | 2004 | Hepatogastroenterology2004，51，56： | 1 |
| 17 | Magnifying narrowbandimaging is more accurate than conventional white-lightimaging in diagnosis of gastric mucosal cancer显示文摘 | Ezoe Y Muto M Uedo N | 2011 | Gastroenterology2011，141，6： | 1 |
| 18 | Effect of a proton pump inhibitor or an H2-receptor antagonist on prevention of bleeding from ulcer after endoscopic submucosal dissection of early gastric cancer: a prospective randomized controlled trial 显示文摘 | Uedo N Takeuchi Y Yamada T | 2007 | Am J Gastroenterol2007，102，8： | 1 |
| 19 | A new method ofdiagnosing gastric intestinal metaplasia:narrow-band imagingwith magnifying endoscopy显示文摘 | Uedo N Ishihara R Iishi H | 2006 | Endoscopy2006，38，8： | 1 |
| 20 | A new method of diagnosing gastric intestinal metapatasia:narrow band imaging with magnifying endoscopy显示文摘 | Uedo N lshihara R Ilshi H et aI | 2006 | Endoscopy2006，58，8： | 1 |
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