Hidefumi Nishikiori

ORCID: 0000-0003-1767-8996
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About
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Research Areas
  • Pancreatic and Hepatic Oncology Research
  • Gallbladder and Bile Duct Disorders
  • Pediatric Hepatobiliary Diseases and Treatments
  • Pancreatitis Pathology and Treatment
  • Gastrointestinal disorders and treatments
  • Appendicitis Diagnosis and Management
  • Cholangiocarcinoma and Gallbladder Cancer Studies
  • Esophageal and GI Pathology
  • Neuroendocrine Tumor Research Advances
  • Gastric Cancer Management and Outcomes
  • Infection Control and Ventilation
  • COVID-19 and healthcare impacts
  • Colorectal Cancer Screening and Detection
  • Helicobacter pylori-related gastroenterology studies
  • Inhalation and Respiratory Drug Delivery
  • Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
  • Biliary and Gastrointestinal Fistulas
  • Tracheal and airway disorders
  • Gastroesophageal reflux and treatments
  • Drug-Induced Adverse Reactions
  • Metastasis and carcinoma case studies
  • Amoebic Infections and Treatments
  • Neuroblastoma Research and Treatments
  • Foreign Body Medical Cases
  • Esophageal Cancer Research and Treatment

Oita Medical Center
2017-2024

Sapporo Medical University
2023

Unidad de Cirugía Artroscópica
2020

Wakayama Medical University
2018

Oita University
2017-2018

Endoscopic ultrasound-guided biliary drainage (EUS-BD) can be carried out by two different approaches: choledochoduodenostomy (CDS) and hepaticogastrostomy (HGS). We compared the efficacy safety of these approaches in malignant distal obstruction (MDBO) patients using a prospective, randomized clinical trial.Patients with after failed endoscopic retrograde cholangiopancreatography were randomly selected for either CDS or HGS. The procedures at nine tertiary centers from September 2013 to...

10.1111/den.13406 article EN Digestive Endoscopy 2019-03-25

Background and Aim Endoscopic ultrasonography‐guided hepaticogastrostomy ( EUS ‐ HGS ) is often indicated for advanced stage patients. Therefore it important to prevent adverse events associated with procedures obtain long stent patency. ‐guided antegrade stenting AS has been developed as an technique. Thus, achieve patency, combined HGAS reported. The aim of the present study was evaluate technical feasibility efficacy in a multicenter, prospective study. Methods This carried out at each...

10.1111/den.12976 article EN Digestive Endoscopy 2017-10-21

INTRODUCTION: During the coronavirus disease 2019 pandemic, whether endoscopy generates aerosols needs to be determined. METHODS: In patients undergoing upper gastrointestinal with an enclosure covering their heads, 0.3–10-μm were measured for 60 seconds before, during, and after by optical counter. Whether increased in situation without was examined. RESULTS: The analysis included 103 consecutive 90 control patients. Aerosols significantly during compared group. Body mass index burping...

10.14309/ajg.0000000000000983 article EN cc-by-nc-nd The American Journal of Gastroenterology 2020-10-19

Coronavirus disease 19 (COVID-19) refers to human infection with severe acute respiratory syndrome coronavirus 2. The World Health Organization declared COVID-19 a pandemic on March 11, 2020. By April 21, 2020, the number of confirmed cases had increased more than 2,397,000 globally, an overall mortality rate 6.8%.1World OrganizationSituation report - 92.https://www.who.int/docs/default-source/coronaviruse/situation-reports/20200421-sitrep-92-covid-19.pdf?sfvrsn=38e6b06d_4Date: 2020Google...

10.1016/j.vgie.2020.05.002 article EN cc-by-nc-nd VideoGIE 2020-05-11

Objectives Percutaneous transhepatic gallbladder drainage ( PTGBD ) is widely used for patients with acute cholecystitis. There are little data on the efficacy and safety of endoscopic ultrasound‐guided EUS ‐ GBD replacement in who cannot undergo cholecystectomy. Methods This multicenter retrospective study Japan reviewed records underwent to replace between January 2010 December 2017. Outcomes evaluated included technical success, defined as successful stent placement gastrointestinal lumen...

10.1111/den.13242 article EN Digestive Endoscopy 2018-07-24

Objective Stenting is an established endoscopic therapy for malignant gastric outlet obstruction (mGOO). The choice of stent (covered vs uncovered) has been examined in prior randomised studies without clear results. Design In a multicentre prospective study, we compared covered (CSEMS) with uncovered self-expandable metal stents (UCSEMS) patients mGOO; main outcomes were dysfunction and patient survival, subgroup analyses extrinsic intrinsic tumours. Results Overall survival was poor no...

10.1136/gutjnl-2020-320775 article EN cc-by-nc Gut 2020-11-22

Background and AimsThe diagnostic performance of EUS-guided fine-needle aspiration/biopsy sampling (EUS-FNAB) for pancreatic ductal adenocarcinoma (PDAC) ≤10 mm in diameter is relatively low. Pancreatic juice cytology (PJC) has gained attention because its high sensitivity small PDACs. We aimed to clarify the ability EUS-FNAB salvage PJC PDAC mm.MethodsData obtained from attempted patients with EUS-confirmed tumors (excluding metastases/malignant lymphomas) were retrospectively analyzed....

10.1016/j.gie.2023.08.006 article EN cc-by-nc-nd Gastrointestinal Endoscopy 2023-08-18

Genetic abnormalities specific to post-H. pylori eradication gastric cancer (GC), especially those associated with undifferentiated post-eradication GC, are unknown. We conducted next-generation sequencing of GC diagnosed either before or after investigate the carcinogenesis GC. Five cases differentiated [HP(-)-D group], five H. pylori-positive [HP(+)-D four [HP(-)-U group)], and six [HP(+)-U group)] underwent analysis. DNA was extracted from tumor samples, non-tumor samples all subjects....

10.1159/000543645 article EN Digestive Diseases 2025-01-17

Pancreatic ductal adenocarcinoma (PDAC) with a diameter ≤10 mm and high-grade pancreatic intraepithelial neoplasia (HG-PanIN) require pre-operative diagnosis. Most cases present only indirect imaging findings without visible tumors on endoscopic ultrasound (EUS). Therefore, EUS-guided fine-needle aspiration/biopsy is not applicable. An alternative diagnostic method juice cytology (PJC) via naso-pancreatic drainage (ENPD-PJC), which the standard practice. This study aimed to investigate...

10.1016/j.pan.2024.06.006 article EN cc-by-nc-nd Pancreatology 2024-06-12

Endoscopic treatment for malignant biliary obstruction (MBO) in patients bearing surgically altered anatomy (SAA) is not well-established. Although endoscopic ultrasound-guided drainage (EUS-BD) has emerged as a new option MBO, limited data are available regarding the efficacy and safety of EUS-BD with SAA. We conducted multicenter prospective registration study to evaluate this population.This involved 10 referral centers Japan. Patients SAA who were scheduled receive unresectable MBO...

10.1177/1756284820930964 article EN cc-by-nc Therapeutic Advances in Gastroenterology 2020-01-01

Objectives Patients with acute cholecystitis receiving antithrombotic therapy (ATT) have an increased risk of bleeding complications during surgery and percutaneous drainage. Endoscopic transpapillary gallbladder drainage (ETGBD) is recommended for such cases; however, evidence limited. To investigate this issue further, we performed a retrospective multicenter study. Methods One hundred thirty patients who underwent ETGBD were enrolled. They divided into ATT group (continuation on the day...

10.1111/den.13650 article EN Digestive Endoscopy 2020-02-13

Early detection of pancreatic ductal adenocarcinoma (PDAC) in the general population is difficult due to unknown clinical characteristics. This study was conducted clarify factors associated with early stage PDAC. Well-known symptoms and PDAC were classified into indicators, risk factors, imaging findings concomitant To analyze these for patients compared without PDAC, we constructed new diagnostic strategies. The 35 (stage 0 IA) 801 retrospectively. Clinical indicators; presence number...

10.3390/diagnostics12020377 article EN cc-by Diagnostics 2022-02-01

Objectives This study aimed to evaluate the utility of endoscopic ultrasonography screening for small pancreatic cancer (PC) and propose a new simple scoring system selecting individuals who should be screened. Methods Risk factors or symptoms related PC were tentatively divided into high- low-grade risk groups based mainly on reported relative values. Numbers designated as scores. Endoscopic was performed 632 individuals. We analyzed scores detection prospectively, patients retrospectively....

10.1097/mpa.0000000000000988 article EN Pancreas 2018-01-12

Residual common bile duct (CBD) stones occasionally become symptomatic after stone removal with endoscopic retrograde cholangiopancreatography (ERCP) upon of the biliary stent (EBS). An accurate evaluation residual before is necessary. This study evaluated a new two-step check method using ultrasound (EUS) for detection ERCP removal.Fifty-six patients who underwent CBD and EBS placement were prospectively enrolled. by method. was removed at time or later removal. The primary outcome to...

10.1159/000521925 article EN Digestion 2022-01-01

Endoscopic ultrasound-guided biliary drainage (EUS-BD) has become comparable to endoscopic retrograde cholangiopancreatography and is now considered a first-line intervention for certain obstructions. Although analysis of experience-related factors may help achieve better outcomes contribute its wider adoption, no concrete evidence exists regarding the required operator or institutional experience levels. This study aimed analyze at beginner multicenters. Patients who underwent EUS-BD using...

10.3390/jcm12062393 article EN Journal of Clinical Medicine 2023-03-20

Endoscopic transpapillary gallbladder drainage (ETGBD) is recommended for patients with acute cholecystitis at high risk surgery/percutaneous transhepatic (PTGBD). ultrasound-guided (EUS-GBD) has higher success and mortality rates than ETGBD. Optimal endoscopic remains controversial. Patients moderate/severe surgery/PTGBD who underwent ETGBD were enrolled. In the new-ETGBD (N-ETGBD)/traditional-ETGBD (T-ETGBD) strategy, in whom initial failed rescue-EUS-GBD same session/rescue-PTGBD,...

10.3390/jcm12227034 article EN Journal of Clinical Medicine 2023-11-10

Ryota Sagami, Kentaro Yamao, Ryuki Minami, Jun Nakahodo, Hidetoshi Akiyama, Hidefumi Nishikiori, Kazuhiro Mizukami, Kenji Vikram Bhatia, Yuji Amano, and Kazunari Murakami. Gut Liver -0001;0:. https://doi.org/10.5009/gnl220521

10.5009/gnl220521 article SW cc-by-nc Gut and Liver 2023-05-11

We herein report an extremely rare case of adenocarcinoma the minor duodenal papilla (MiDP) which was successfully treated by endoscopic mucosal resection (EMR). An asymptomatic 84-year-old man underwent upper gastrointestinal endoscopy, revealed a slightly elevated lesion at MiDP. The biopsy findings were suggestive adenocarcinoma. Computed tomography, magnetic resonance images and ultrasonography did not reveal pancreatic tumor infiltration nor any apparent distant metastases. Therefore,...

10.2169/internalmedicine.6404-20 article EN Internal Medicine 2021-03-14

Pancreatic neuroendocrine tumors (pNETs) are particularly rare. The various forms of PNETs, such as cystic degeneration, make differentiation from other similar pancreatic lesions difficult. We can detect small by endoscopic ultrasound (EUS) and obtain preoperative pathological diagnosis EUS-guided fine needle aspiration (FNA). describe, here, an interesting case pNET in a 42-year-old woman with no family history. Computed tomography magnetic resonance imaging revealed 18 mm × 17 lesion...

10.3748/wjg.v23.i37.6911 article EN cc-by-nc World Journal of Gastroenterology 2017-09-28

Rationale: Idiopathic retroperitoneal abscesses are insidious, occult illnesses with high mortality if inadequately drained. Endoscopic ultrasound-guided drainage is an alternative to percutaneous or surgical drainage, it not widely performed for other than peripancreatic fluid collection. Patient concerns: We present a 76-year-old Japanese woman abdominal pain, fever, and history of rheumatism on treatment immunosuppressants. Diagnoses: The patient was diagnosed idiopathic abscess based...

10.1097/md.0000000000009132 article EN cc-by-nc Medicine 2017-12-01

In the present prospective case series study, we investigated lesion-detection ability of an AI-equipped colonoscopy as addition to (CS) screening. Participants were 100 patients aged ≥20 years who had not undergone CS at study site in last 3 and passed exclusion criteria. procedures conducted using conventional white light imaging computer-aided detection (CADe). Adenoma rate (ADR; number individuals with least one adenoma detected) was compared between group CADe group. Of 170 lesions...

10.3390/jcm12196332 article EN Journal of Clinical Medicine 2023-10-02

A 92-year-old man was admitted with jaundice and cholangitis. Computed tomography (CT) magnetic resonance cholangiopancreatography (MRCP) revealed intrahepatic/middle bile duct dilatation, a pancreatic head lesion suspicious for carcinoma ([Fig. 1] a, c); the intraperitoneal organs were drawn into right thoracic cavity due to Chilaiditi syndrome b). Despite wire-guided insertion, endoscopic retrograde cholangiography (ERC) could not reach papilla of Vater owing anatomical abnormalities 2])....

10.1055/a-2344-8116 article EN cc-by Endoscopy 2024-07-15
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