Atsushi Irisawa
A5076128157- Pancreatic and Hepatic Oncology Research
- Pancreatitis Pathology and Treatment
- Gallbladder and Bile Duct Disorders
- Gastrointestinal disorders and treatments
- Liver Disease and Transplantation
- Esophageal and GI Pathology
- Liver Disease Diagnosis and Treatment
- Gastric Cancer Management and Outcomes
- Pediatric Hepatobiliary Diseases and Treatments
- Gastrointestinal Tumor Research and Treatment
- Neuroendocrine Tumor Research Advances
- Cholangiocarcinoma and Gallbladder Cancer Studies
- Gastroesophageal reflux and treatments
- Helicobacter pylori-related gastroenterology studies
- Liver Diseases and Immunity
- Gastrointestinal Bleeding Diagnosis and Treatment
- Metastasis and carcinoma case studies
- Inflammatory Bowel Disease
- Biliary and Gastrointestinal Fistulas
- Abdominal vascular conditions and treatments
- Immunotherapy and Immune Responses
- Microscopic Colitis
- Esophageal Cancer Research and Treatment
- Colorectal Cancer Screening and Detection
- Eosinophilic Esophagitis
Dokkyo Medical University
2018-2025
The Japanese Society of Gastroenterological Surgery
2015-2024
Iwate Medical University
2020-2024
Gunma University
2024
Onomichi General Hospital
2023-2024
Hiroshima University
2023-2024
Fukushima Medical University
2013-2023
Hiroshima University Hospital
2023
Hudson Institute
2023
Showa University
2020-2021
Objectives This retrospective multicenter study aimed to clarify the clinical impact of endotherapy for painless pancreatic duct (PD) stones compared with that in patients who received conservative treatment without endotherapy. Methods We enrolled 268 suffering from chronic pancreatitis PD (145 and 123 endotherapy) evaluated on radiological outcomes. Results When was set as a reference, complete clearance targeted decreased relative risk atrophy parenchyma after inclusion (hazard ratio [HR]...
<b>Background and study aims:</b> Only a few large cohort studies have evaluated the efficacy safety of endoscopic necrosectomy for infected walled-off pancreatic necrosis (WOPN). Therefore, multicenter, was conducted to evaluate examine procedural details follow-up after successful necrosectomy. <b>Patients methods:</b> A retrospective review in 16 leading Japanese institutions patients who underwent WOPN between August 2005 July 2011. The data were also reviewed determine long-term...
Background: No study has compared covered metallic stents with Tannenbaum stents. We evaluated the efficacy of DoubleLayer stent (DLS) and Covered Wallstent (CWS) in patients pancreatic head cancer (PHC). Patients & Methods: This was a multicenter, prospective randomized study. Between October 2005 December 2007, we enrolled 113 (58 DLS, 55 CWS) unresectable PHC distal biliary obstructions observed them for at least 6 months. Results: significant difference patient survival found between...
Endoscopic ultrasound/ultrasonography-guided biliary drainage (EUS-BD) is a relatively new modality for after failed or difficult transpapillary cannulation. Despite its clinical utility, EUS-BD can be complicated by severe adverse events such as bleeding, perforation, and peritonitis. The aim of this paper to provide practice guidelines safe performance well introduction the procedure non-expert centers. comprised patient-intervention-comparison-outcome-formatted questions (CQs) (Qs), which...
This paper is part of the international consensus guidelines on chronic pancreatitis, presenting for interventional endoscopy.An working group with experts endoscopy evaluated 26 statements generated from evidence 9 clinically relevant questions. The Grading Recommendations Assessment, Development, and Evaluation approach was used to evaluate level evidence. To determine agreement, a nine-point Likert scale voting statements.Strong obtained 15 relating nine questions including recommendation...
Recently, the need for sedation in gastrointestinal endoscopy has been increasing. However, National Health Insurance Drug Price list Japan does not include any drug specifically used sedation. Although benzodiazepines are main medication, their use cases of approved. This led Gastrointestinal Endoscopy Society to develop first set guidelines on basis evidence-based medicine collaboration with Japanese Anesthesiologists. The present comprise 14 statements, five which were judged be valid...
EUS-guided biliary drainage (EUS-BD) was shown to be useful for malignant obstruction (MBO). However, there is lack of consensus on how EUS-BD should performed.This a worldwide multi-institutional survey among members the International Society EUS conducted in February 2018. The consisted 10 questions related practice EUS-BD.Forty-six endoscopists them completed survey. majority felt that could replace percutaneous transhepatic after failure ERCP. Among all methods, rendezvous stenting...
Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is used for the histopathological diagnosis of any type gastrointestinal disease. Few adverse events are experienced with this procedure; however, actual rate remains unclear. This study aimed to clarify current status cases that related EUS-FNA procedure histopathologic diagnoses.A retrospective analysis EUS-FNA-related in Japanese tertiary centers was conducted by assessing following clinical data: basic case information, FNA...