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| 1 | Is endoscopic papillary large balloon dilatation without endoscopic sphincterotomy effective?显示文摘AIM: To evaluate the safety and efficacy of endoscopic papillary large balloon dilatation(EPLBD) without endoscopic sphincterotomy in a prospective study.METHODS: From July 2011 to August 2013, we performed EPLBD on 41 patients with nae papillae prospectively. For sphincteroplasty of EPLBD,endoscopic sphincterotomy(EST) was not performed,and balloon diameter selection was based on the distal common bile duct diameter. The balloon was inflated to the desired pressure. If the balloon waist did not disappear, and the desired pressure was satisfied, we judged the dilatation as complete. We used a retrieval balloon catheter or mechanical lithotripter(ML) to remove stones and assessed the rates of complete stone removal, number of sessions, use of ML and adverse events. Furthermore, we compared the presence or absence of balloon waist disappearance with clinical characteristics and endoscopic outcome.RESULTS: The mean diameters of the distal and maximum common bile duct were 13.5 ± 2.4 mm and16.4 ± 3.1 mm, respectively. The mean maximum transverse-diameter of the stones was 13.4 ± 3.4mm, and the mean number of stones was 3.0 ± 2.4.Complete stone removal was achieved in 97.5%(40/41)of cases, and ML was used in 12.2%(5/41) of cases.The mean number of sessions required was 1.2 ± 0.62.Pancreatitis developed in two patients and perforation in one. The rate of balloon waist disappearance was73.1%(30/41). No significant differences were noted in procedure time, rate of complete stone removal(100% vs 100%), number of sessions(1.1 vs 1.3, P= 0.22), application of ML(13% vs 9%, P = 0.71),or occurrence of pancreatitis(3.3% vs 9.1%, P =0.45) between cases with and without balloon waist disappearance.CONCLUSION: EST before sphincteroplasty may be unnecessary in EPLBD. Further investigations are needed to verify the relationship between the presence or absence of balloon waist disappearance. | Shigefumi Omuta Iruru Maetani Michihiro Saito Hiroaki Shigoka Katsushige Gon Junya Tokuhisa Mieko Naruki | 2015 | World Journal of Gastroenterology2015，21，23： | 5 |
| 2 | Treating bilio-duodenal obstruction: Combining new endoscopic technique with 6 Fr stent introducer显示文摘Periampullary cancer may cause not only biliary but also duodenal obstructions. In patients with concomitant duodenal obstructions, endoscopic biliary stenting remains technically difficult and may often require percutaneous transhepatic biliary drainage. We describe a method of metal stent placement via a thin forwardviewing endoscope in patients with simultaneous biliary and duodenal obstruction. In two consecutive patients with biliary and duodenal obstruction due to pancreatic cancer, a new biliary metal stent mounted in a slim delivery catheter was placed via a thin forward viewing endoscope after passage across the duodenal stenosis without balloon dilation. In both patients, with our new placement technique, metallic stents were successfully placed in a short time without adverse events. After biliary stenting, one patient received curative resection and the other received duodenal stenting for palliation. Metallic stent placement with a forward-viewing thin endoscope is a beneficial technique, which can avoid percutaneous drainage in patients with bilio-duodenal obstructions due to periampullary cancer. | Iruru Maetani Tomoko Nambu Shigefumi Omuta Takeo Ukita Hiroaki Shigoka | 2010 | World Journal of Gastroenterology2010，16，22： | 2 |
| 3 | Granuloma and cryptococcosis显示文摘 | Shibuya K Hirata A Omuta J | 2005 | J Infect Chemother2005，11，3： | 1 |
| 4 | Granuloma and cryptococcosis显示文摘 | Shibuya K Hirata A Omuta J | | 0，，03： | 1 |
| 5 | Granuloma and cryptococcosis显示文摘 | Shibuya K Hirata A Omuta J | 2005 | J Infect Chemother2005，11，3： | 1 |
| 6 | Granuloma and cryptocec- cosis显示文摘 | Shibuya K Hiram A Omuta J | 2005 | J Infect Chemother2005，11，3： | 1 |
| 7 | Effects of a salty diet on growth and osmoregulatory ability of sockeye salmon,Oncorhynchus nerka,in sea water显示文摘 | Yamanome T Mitsuboshi T Omuta R | 1995 | Aquaculture Science1995，43，3： | 1 |
| 8 | Granuloma and cryptococcosis显示文摘 | Shibuya K Hirata A Omuta J | 2005 | JInfect Chemother2005，11，3： | 1 |
| 9 | Wire-guided selective cannulation of the bile duct with a sphincterotome: a prospective randomized comparative study with the standard method显示文摘 | Tomoko Nambu Takeo Ukita Hiroaki Shigoka Shigefumi Omuta Iruru Maetani | 2011 | Scandinavian Journal of Gastroenterology2011，，1： | 1 |
| 10 | Direct peroral cholangioscopy using an ultraslim upper endoscope for biliary lesions显示文摘BACKGROUND: The development of direct peroral cholangioscopy(DPOC) using an ultraslim endoscope simplifies biliary cannulation. The conventional techniques are cumbersome to perform and require advanced skills. The recent introduction of the guidewires and balloons has improved the therapeutic outcomes. Here we describe an effective and easier method for performing DPOC using an ultraslim upper endoscope. METHODS: Indications for DPOC were the presence of stones on follow-up of patients who had previously undergone complete sphincteroplasty, including endoscopic sphincterotomy or endoscopic papillary large balloon dilatation. Fifteen patients underwent DPOC. An ultraslim endoscope was inserted perorally and was advanced into the major papilla. The ampulla of Vater was visualized by retroflexing the endoscope in the distal second portion of the duodenum, and then DPOC was performed using a wire-guided cannulation technique with an anchored intraductal balloon catheter. RESULTS: One patient failed in the treatment due to looping of the endoscope in the fornix of the stomach. Fourteen(93.3%) were successfully treated with our modified DPOC technique. Only one patient(6.7%) experienced an adverse event(pancreatitis) who responded well to conservative management. Residual stones of the common bile duct were completely removed in 3 patients. CONCLUSION: The modified method of DPOC is simple, safe and easy to access the bile duct. | Shigefumi Omuta Iruru Maetani Takeo Ukita Tomoko Nambu Katsushige Gon Hiroaki Shigoka Yoshinori Saigusa Michihiro Saito | 2014 | Hepatobiliary & Pancreatic Diseases International2014，13，1： | 1 |
| 11 | Placement of a triple‐layered covered versus uncovered metallic stent for palliation of malignant gastric outlet obstruction: A multicenter randomized trial显示文摘 | Iruru Maetani Yoshinori Mizumoto Hiroaki Shigoka Shigefumi Omuta Michihiro Saito Junya Tokuhisa Toshio Morizane | 2014 | Digestive Endoscopy2014，，2： | 1 |
| 12 | Granuloma and cryptococcosis 显示文摘 | Shibuya K Hirata A Omuta J | 2005 | J Infect Chemother2005，11，3： | 1 |
| 13 | Granuloms and crypto coccosis显示文摘 | Shibuys K Hirata A Omuta J | 2005 | J infect chemother2005，11，11： | 1 |
| 14 | Newly designed J-shaped tip guidewire: A preliminary feasibility study in wire-guided cannulation显示文摘AIM: To perform wire-guided cannulation using a newly designed J-shaped tip guidewire, and to verify feasibility and safety for use. METHODS: The study was conducted on endoscopic retrograde cholangiopancreatography (ERCP) patients with na ve papilla undergoing diagnosis and treatment of biliary diseases between September 2011 and July 2012. We performed ERCP in a succession of 50 cases with a J-shaped tip guidewire. The first insertion attempt began with a trainee who had 5 min to complete cannulation, followed if necessary by the trainer for another 5 min. We assessed the primary success rate of selective biliary cannulation within 10 min and adverse events such as post-ERCP pancreatitis (PEP), bleeding or perforation.RESULTS: The primary success rate was 90% (45/50) within 10 min, the initial success rate within 5 min by trainee staff was 76% (38/50). The rate of PEP was 6% (3/50), but all 3 cases were mild pancreatitis. All patients were managed successfully with conservative treatment. There was no bleeding or perforation. CONCLUSION: A newly designed J-shaped tip guidewire has the possibility to facilitate selective biliary cannulation for ERCP and appears to be safe. | Shigefumi Omuta Iruru Maetani Hiroaki Shigoka Katsushige Gon Michihiro Saito Junya Tokuhisa Mieko Naruki | 2013 | World Journal of Gastroenterology2013，19，28： | 1 |
| 15 | Granuloma and cryptococcosis显示文摘 | Shibuya K Hirata A Omuta J | 2005 | J Infect Chemother2005，11，3： | 1 |
| 16 | 显示文摘 | H. Hatase M. Kinoshita T. Bando N. Kamezaki K. Sato Y. Matsuzawa K. Goto K. Omuta Y. Nakashima H. Takeshita W. Sakamoto | 2002 | Marine Biology2002，，2： | 1 |
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