O. Togawa

发表

Usefulness of the DL in ME with NBI for determining the expanded area of early-stage differentiated gastric carcinoma.

M. Shimizu, K. Nonaka, M. Namoto, 2012, World journal of gastrointestinal endoscopy.

Short term results of endoscopic submucosal dissection in superficial esophageal squamous cell neoplasms.

M. Shimizu, K. Nagata, Y. Nakai, 2010, World journal of gastrointestinal endoscopy.

Comparison of partially covered nitinol stents with partially covered stainless stents as a historical control in a multicenter study of distal malignant biliary obstruction: the WATCH study.

A. Irisawa, T. Itoi, I. Yasuda, 2012, Gastrointestinal endoscopy.

Multicenter study of endoscopic preoperative biliary drainage for malignant hilar biliary obstruction: E‐POD hilar study

N. Sasahira, T. Itoi, I. Yasuda, 2018, Journal of gastroenterology and hepatology.

Pancreatic cancer in patients with pancreatic cystic lesions: a prospective study in 197 patients.

N. Sasahira, T. Kawabe, M. Omata, 2006, Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association.

PROSPECTIVE STUDY OF THE EVALUATION OF THE USEFULNESS OF TUMOR TYPING BY NARROW BAND IMAGING FOR THE DIFFERENTIAL DIAGNOSIS OF GASTRIC ADENOMA AND WELL‐DIFFERENTIATED ADENOCARCINOMA

K. Nagata, S. Ban, K. Nonaka, 2011, Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society.

Clinical Outcome of Endoscopic Submucosal Dissection for 352 Lesions of Superficial Gastric Neoplasms in 284 Patients

K. Nonaka, Y. Ochiai, O. Togawa, 2013 .

Feasibility study of gemcitabine and cisplatin combination chemotherapy for patients with refractory biliary tract cancer

N. Sasahira, M. Omata, K. Koike, 2011, Investigational New Drugs.

A case of gastric mucosa-associated lymphoid tissue lymphoma in which magnified endoscopy with narrow band imaging was useful in the diagnosis.

M. Shimizu, K. Nagata, T. Sakurai, 2012, World journal of gastrointestinal endoscopy.

A Novel Partially Covered Self-Expandable Metallic Stent with Proximal Flare in Patients with Malignant Gastric Outlet Obstruction

S. Yoshida, K. Koike, Tomotaka Saito, 2017, Gut and liver.

Multicenter phase II study of S-1 monotherapy as second-line chemotherapy for advanced biliary tract cancer refractory to gemcitabine

N. Sasahira, M. Omata, K. Koike, 2012, Investigational New Drugs.

Management of distal malignant biliary obstruction with the ComVi stent, a new covered metallic stent

N. Sasahira, T. Kawabe, M. Omata, 2009, Surgical Endoscopy.

Incidental Pancreatic Cysts Found by Magnetic Resonance Imaging and Their Relationship With Pancreatic Cancer

K. Ohtomo, N. Sasahira, T. Kawabe, 2012, Pancreas.

Duodenal metal stent placement is a risk factor for biliary metal stent dysfunction: an analysis using a time-dependent covariate

N. Sasahira, K. Koike, K. Kawakubo, 2013, Surgical Endoscopy.

Management of malignant gastric outlet obstruction with a modified triple-layer covered metal stent.

N. Sasahira, M. Omata, K. Koike, 2012, Gastrointestinal endoscopy.

One- and two-step self-expandable metal stent placement for distal malignant biliary obstruction: a propensity analysis

N. Sasahira, K. Koike, K. Kawakubo, 2012, Journal of Gastroenterology.

A Pilot Study for Combination Chemotherapy Using Gemcitabine and S-1 for Advanced Pancreatic Cancer

N. Sasahira, T. Kawabe, M. Omata, 2009, Oncology.

Duodenal invasion is a risk factor for the early dysfunction of biliary metal stents in unresectable pancreatic cancer.

N. Sasahira, M. Omata, K. Koike, 2011, Gastrointestinal endoscopy.

Efficacy and Safety of Metallic Stents in Patients With Unresectable Pancreatic Cancer Receiving Gemcitabine

N. Sasahira, T. Kawabe, M. Omata, 2007, Pancreas.

Endoscopic retrograde cholangiopancreatography for distal malignant biliary stricture.

N. Sasahira, K. Koike, K. Kawakubo, 2012, Gastrointestinal endoscopy clinics of North America.

Impact of introduction of wire‐guided cannulation in therapeutic biliary endoscopic retrograde cholangiopancreatography

N. Sasahira, M. Omata, K. Koike, 2011, Journal of gastroenterology and hepatology.

Prospective study of the evaluation of the usefulness of tumor typing by narrow band imaging for the differential diagnosis of gastric adenoma and well-differentiated adenocarcinoma

K. Nagata, S. Ban, K. Nonaka, 2013 .

A 19-Gauge Histology Needle Versus a 19-Gauge Standard Needle in Endoscopic Ultrasound-Guided Fine-Needle Aspiration for Solid Lesions: A Multicenter Randomized Comparison Study (GREATER Study)

Y. Hatano, A. Hara, M. Fukayama, 2018, Digestive Diseases and Sciences.

Management of late biliary complications in patients with gallbladder stones in situ after endoscopic papillary balloon dilation

T. Kawabe, M. Omata, Y. Nakai, 2009, European journal of gastroenterology & hepatology.

S-1 Monotherapy in Patients with Advanced Biliary Tract Cancer

N. Sasahira, T. Kawabe, M. Omata, 2009, Oncology.

Unilateral versus Bilateral Endoscopic Nasobiliary Drainage and Subsequent Metal Stent Placement for Unresectable Malignant Hilar Obstruction: A Multicenter Randomized Controlled Trial

T. Itoi, K. Hanada, Tomotaka Saito, 2021, Journal of clinical medicine.

Preoperative biliary drainage using a fully covered self-expandable metallic stent for pancreatic head cancer: A prospective feasibility study

K. Koike, K. Kawakubo, Y. Nakai, 2018, Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association.

Antireflux Metal Stent as a First-Line Metal Stent for Distal Malignant Biliary Obstruction: A Pilot Study

K. Koike, Y. Nakai, H. Isayama, 2016, Gut and liver.

Multicenter study of endoscopic preoperative biliary drainage for malignant distal biliary obstruction.

N. Sasahira, T. Itoi, K. Sugimori, 2016, World journal of gastroenterology.

Antireflux Metal Stent With an Antimigration System for Distal Malignant Biliary Obstruction: A Feasibility Pilot Study

K. Koike, Y. Nakai, H. Isayama, 2015, Surgical laparoscopy, endoscopy & percutaneous techniques.

Metallic stent with high axial force as a risk factor for cholecystitis in distal malignant biliary obstruction

K. Koike, K. Kawakubo, Y. Nakai, 2014, Journal of gastroenterology and hepatology.

Novel antireflux covered metal stent for recurrent occlusion of biliary metal stents: A pilot study

N. Sasahira, K. Koike, K. Kawakubo, 2014, Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society.

Management of dysfunctional covered self-expandable metallic stents in patients with malignant distal biliary obstruction

N. Sasahira, K. Koike, Y. Nakai, 2013, Journal of Gastroenterology.

Risk factors for pancreatitis following transpapillary self-expandable metal stent placement

N. Sasahira, M. Omata, K. Koike, 2012, Surgical Endoscopy.

Covered metallic stenting for malignant distal biliary obstruction: clinical results according to stent type

N. Sasahira, K. Koike, K. Kawakubo, 2011, Journal of hepato-biliary-pancreatic sciences.

Efficacy and safety of covered self-expandable metal stents for management of distal malignant biliary obstruction due to lymph node metastases

N. Sasahira, M. Omata, K. Koike, 2011, Surgical Endoscopy.

NEW METHOD OF COVERED WALLSTENTS FOR DISTAL MALIGNANT BILIARY OBSTRUCTION TO REDUCE EARLY STENT‐RELATED COMPLICATIONS BASED ON CHARACTERISTICS

N. Sasahira, T. Kawabe, M. Omata, 2011, Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society.

Covered metallic stents in the management of malignant and benign pancreatobiliary strictures.

N. Sasahira, T. Kawabe, M. Omata, 2009, Journal of hepato-biliary-pancreatic surgery.

Intraductal US in the assessment of tumor involvement to the orifice of the cystic duct by malignant biliary obstruction.

N. Sasahira, T. Kawabe, M. Omata, 2008, Gastrointestinal endoscopy.

Management of Occluded Uncovered Metallic Stents in Patients With Malignant Distal Biliary Obstructions Using Covered Metallic Stents

N. Sasahira, T. Kawabe, M. Omata, 2008, Journal of clinical gastroenterology.

Indications and Procedure of Biliary Metallic Stenting

M. Omata, Y. Nakai, H. Isayama, 2008 .

Cholecystitis after metallic stent placement in patients with malignant distal biliary obstruction.

N. Sasahira, T. Kawabe, M. Omata, 2006, Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association.

Endoscopic papillary balloon dilation for bile duct stone: immediate and long-term outcomes in 1000 patients.

N. Sasahira, T. Kawabe, M. Omata, 2007, Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association.

Multicenter randomized trial of endoscopic papillary large balloon dilation without sphincterotomy versus endoscopic sphincterotomy for removal of bile duct stones: MARVELOUS trial

N. Sasahira, Tomotaka Saito, K. Kubota, 2020, Endoscopy.

Multicenter retrospective and comparative study of 5-minute versus 15-second endoscopic papillary balloon dilation for removal of bile duct stones

K. Koike, Y. Nakai, H. Isayama, 2017, Endoscopy International Open.

Endoscopic papillary balloon dilation for bile duct stone removal in patients 60 years old or younger

N. Sasahira, T. Kawabe, M. Omata, 2010, Journal of Gastroenterology.

Endoscopic papillary balloon dilation for the management of bile duct stones in patients 85 years of age and older.

T. Kawabe, M. Omata, H. Isayama, 2008, Gastrointestinal endoscopy.

Efficacy and safety of low‐pressured and short‐time dilation in endoscopic papillary balloon dilation for bile duct stone removal

N. Sasahira, T. Kawabe, M. Omata, 2008, Journal of gastroenterology and hepatology.

Early pancreatic stent placement in wire‐guided biliary cannulation: A multicenter retrospective study

K. Koike, Y. Nakai, H. Isayama, 2018, Journal of gastroenterology and hepatology.

Results of the Tokyo trial of prevention of post-ERCP pancreatitis with risperidone-2: a multicenter, randomized, placebo-controlled, double-blind clinical trial.

N. Sasahira, K. Koike, K. Kawakubo, 2013, Gastrointestinal endoscopy.

The results of the Tokyo Trial of Prevention of Post-ERCP Pancreatitis with Risperidone (Tokyo P3R): a multicenter, randomized, phase II, non-placebo-controlled trial

N. Sasahira, K. Koike, Y. Nakai, 2013, Journal of Gastroenterology.

Early use of double-guidewire technique to facilitate selective bile duct cannulation: the multicenter randomized controlled EDUCATION trial

N. Sasahira, K. Koike, Y. Nakai, 2015, Endoscopy.

Long-Term Outcomes (Mean Follow-Up Period > 10 Years) of Endoscopic Papillary Balloon Dilation for Bile Duct Stones

N. Sasahira, T. Kawabe, M. Omata, 2008 .

Measurement of radial and axial forces of biliary self-expandable metallic stents.

Minoru Tada, Takao Kawabe, Saburo Matsubara, 2009, Gastrointestinal endoscopy.

Clinical features of primary sclerosing cholangitis with onset age above 50 years

N. Sasahira, T. Kawabe, M. Omata, 2008, Journal of Gastroenterology.

A randomized-controlled trial of early endotherapy versus wait-and-see policy for mild symptomatic pancreatic stones in chronic pancreatitis

N. Sasahira, K. Koike, Tomotaka Saito, 2019, European journal of gastroenterology & hepatology.

Efficacy of Pancreatic Stenting After Clearance of Pancreatic Stones

N. Sasahira, T. Kawabe, M. Omata, 2009 .

Endoscopic evaluation of factors contributing to intrapancreatic biliary stricture in autoimmune pancreatitis.

N. Sasahira, T. Kawabe, M. Omata, 2010, Gastrointestinal endoscopy.

The Efficacy of Pancreatic Stenting After Clearance of Pancreatic Stones

N. Sasahira, T. Kawabe, M. Omata, 2005 .

Possibilities of interventional endoscopic ultrasound.

Y. Ochiai, O. Togawa, M. Nakao, 2012, World journal of gastrointestinal endoscopy.

Estimation and comparison of cumulative incidences of biliary self‐expandable metallic stent dysfunction accounting for competing risks

N. Sasahira, K. Koike, K. Kawakubo, 2014, Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society.

Impact of anticancer treatment on recurrent obstruction in covered metallic stents for malignant biliary obstruction

A. Irisawa, T. Itoi, I. Yasuda, 2013, Journal of Gastroenterology.

Risk factors for covered metallic stent migration in patients with distal malignant biliary obstruction due to pancreatic cancer

K. Koike, Y. Nakai, H. Isayama, 2014, Journal of gastroenterology and hepatology.

NOTES and endoscopic pancreatic necrosectomy for the GI endoscopist.

N. Sasahira, T. Kawabe, M. Omata, 2009, Journal of hepato-biliary-pancreatic surgery.

Multicenter, phase II study of gemcitabine and S-1 combination chemotherapy in patients with advanced biliary tract cancer

N. Sasahira, M. Omata, I. Yasuda, 2010, Cancer Chemotherapy and Pharmacology.

CA 19-9 Response as an Early Indicator of the Effectiveness of Gemcitabine in Patients with Advanced Pancreatic Cancer

N. Sasahira, T. Kawabe, M. Omata, 2008, Oncology.

Antireflux covered metal stent for nonresectable distal malignant biliary obstruction: Multicenter randomized controlled trial

K. Koike, I. Yasuda, Tomotaka Saito, 2019, Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society.

A Multicenter Open-Label Randomized Controlled Trial of Pancreatic Enzyme Replacement Therapy in Unresectable Pancreatic Cancer

K. Koike, Tomotaka Saito, Y. Nakai, 2018, Pancreas.

Bezafibrate for the treatment of primary sclerosing cholangitis

N. Sasahira, T. Kawabe, M. Omata, 2010, Journal of Gastroenterology.

Feasibility of Endoscopic Submucosal Dissection: A New Technique for En Bloc Resection of a Large Superficial Tumor in the Colon and Rectum

K. Nonaka, Y. Ochiai, O. Togawa, 2011, International journal of surgical oncology.

International study of endoscopic management of distal malignant biliary obstruction combined with duodenal obstruction

I. Yasuda, K. Hanada, M. Kitano, 2018, Scandinavian journal of gastroenterology.

Clinical outcomes of secondary gastroduodenal self‐expandable metallic stent placement by stent‐in‐stent technique for malignant gastric outlet obstruction

N. Sasahira, K. Koike, Y. Nakai, 2015, Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society.

Transmural Biliary Drainage Can Be an Alternative to Transpapillary Drainage in Patients with an Indwelling Duodenal Stent

K. Koike, K. Kawakubo, Y. Nakai, 2014, Digestive Diseases and Sciences.

Predictive factors of solid food intake in patients with malignant gastric outlet obstruction receiving self‐expandable metallic stents for palliation

N. Sasahira, M. Omata, K. Koike, 2012, Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society.

Efficacy of Gemcitabine for Locally Advanced Pancreatic Cancer: Comparison with 5-Fluorouracil-Based Chemoradiotherapy

N. Sasahira, T. Kawabe, M. Omata, 2008, Chemotherapy.

Gemcitabine and Oxaliplatin Combination Chemotherapy for Patients with Refractory Pancreatic Cancer

N. Sasahira, M. Omata, K. Koike, 2011, Oncology.

Prognostic factors in patients with advanced biliary tract cancer receiving chemotherapy

N. Sasahira, M. Omata, K. Koike, 2011, Cancer Chemotherapy and Pharmacology.

Multicenter phase II study of gemcitabine (GEM) plus S-1 in patients (pts) with advanced biliary tract cancer (BTC).

I. Yasuda, Y. Nakai, H. Isayama, 2009, Journal of clinical oncology : official journal of the American Society of Clinical Oncology.

Inhibition of renin–angiotensin system affects prognosis of advanced pancreatic cancer receiving gemcitabine

N. Sasahira, M. Omata, K. Koike, 2010, British Journal of Cancer.

High‐rate pulmonary involvement in autoimmune pancreatitis

N. Sasahira, T. Kawabe, M. Omata, 2006, Internal medicine journal.

A multicentre randomised phase II trial of gemcitabine alone vs gemcitabine and S-1 combination therapy in advanced pancreatic cancer: GEMSAP study

N. Sasahira, M. Omata, K. Koike, 2012, British Journal of Cancer.

Metallic stent with high axial force as a risk factor for cholecystitis in distal malignant biliary obstruction

K. Koike, K. Kawakubo, Y. Nakai, 2014, Journal of gastroenterology and hepatology.

Estimation and comparison of cumulative incidences of biliary self‐expandable metallic stent dysfunction accounting for competing risks

N. Sasahira, K. Koike, K. Kawakubo, 2014, Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society.

Efficacy and Safety of Metallic Stents in Patients With Unresectable Pancreatic Cancer Receiving Gemcitabine

N. Sasahira, T. Kawabe, M. Omata, 2007, Pancreas.

Mo1298 Self-Expandable Metallic Stent With High Axial Force is the Risk Factor of Cholecystitis

N. Sasahira, K. Koike, K. Kawakubo, 2012 .

CA 19-9 Response as an Early Indicator of the Effectiveness of Gemcitabine in Patients with Advanced Pancreatic Cancer

N. Sasahira, T. Kawabe, M. Omata, 2008, Oncology.