Kiyoyuki Kobayashi

Repurposing Existing Robotic Process Automation Resources for Hepatitis C Virus Antibody-Positive Patient Management: A Multidisciplinary Hospital Workflow

Takako Nomura, Kiyoyuki Kobayashi, Yudai Sato, Kayo Ishikawa et autres

Timely identification of patients with hepatitis C virus (HCV) antibody positivity is crucial for evaluation and referral. By repurposing a robotic process automation (RPA) tool already deployed for other hospital tasks, we reconstructed our workflow to integrate automated list generation into the …

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Preoperative Prediction of Pathologic Response After Neoadjuvant Chemoradiotherapy for Pancreatic Ductal Adenocarcinoma: A Metabolic Response–Based Predictive Model

Hironobu Suto, Yoshio Shimizu, Takuro Fuke, Hiroyuki Matsukawa et autres

OBJECTIVES: Neoadjuvant chemoradiotherapy (NACRT) is increasingly employed for resectable and borderline resectable pancreatic ductal adenocarcinoma (PDAC), yet reliable preoperative predictors of pathologic tumor regression are limited. We developed predictive models for pathologic response following NACRT. METHODS: We analyzed prospectively collected Phase II …

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Single-balloon enteroscope-bridged endosonography-guided gallbladder drainage with lumen-apposing metal stent in Billroth II

Kiyoyuki Kobayashi, Takako Nomura, Maki Ayaki, Naoki Fujita et autres

Endoscopic ultrasound-guided gallbladder drainage (EUS-GBD) using a lumen-apposing metal stent (LAMS) effectively treats acute cholecystitis (ACC) in patients unsuitable for cholecystectomy.[ 1​ ] However, advancing an oblique-viewing echoendoscope (OVE) through the afferent limb in Billroth II anatomy is challenging. Prior approaches include …

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Copper-deficiency anemia and neutropenia during zinc maintenance therapy for Wilson disease associated with persistent strict dietary copper restriction

Takako Nomura, Kiyoyuki Kobayashi, Maiko Murakami, Asaki Ichikawa et autres

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Paired tumor–normal metabolomic profiling reveals alterations in choline phospholipid precursor metabolism in biliary tract cancer

Hironobu Suto, Kensuke Kumamoto, Mina Nagao, Yumi Furuichi et autres

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Initial Experience With Endoscopic Ultrasound‐Guided Gallbladder Drainage Using Lumen‐apposing Metal Stents in Extremely Elderly and Frail Patients

Kiyoyuki Kobayashi, Takako Nomura, Maki Ayaki, Tomohiro Ogi et autres

Objectives: Endoscopic ultrasound-guided gallbladder drainage (EUS-GBD) using lumen-apposing metal stents (LAMS) is a treatment option for acute cholecystitis in high-risk surgical patients. However, data on extremely elderly and frail patients are limited. We report our initial experience with EUS-GBD using electrocautery-enhanced LAMS …

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Robotic distal pancreatectomy has a lower incidence than open surgery of clinically relevant pancreatic fistula: a propensity score–matched analysis with emphasis on inflammation and microbial contamination

Hironobu Suto, Hiroyuki Matsukawa, Yasuhisa Ando, Minoru Oshima et autres

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Comparison of EUS-guided treatment and balloon-enteroscopy-assisted endoscopic retrograde cholangiopancreatography for large bile duct stone removal in patients with surgically altered anatomy: A multicenter study

Ryota Sagami, Kiyoyuki Kobayashi, Makoto Hinokuchi, K Takahashi et autres

Background and Objectives: Large bile duct stone removal in patients with surgically altered anatomy (SAA) is technically challenging. Although balloon-enteroscopy-assisted endoscopic retrograde cholangiopancreatography (BE-ERCP) has been widely adopted, EUS-guided treatment (EUS-T) may achieve higher stone removal rates owing to improved device accessibility …

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Percutaneous endoscopic necrosectomy using a novel slim gastroscope with a large working channel for pancreatic walled-off necrosis

Naoki Fujita, Hideki Kamada, Kiyoyuki Kobayashi, Manabu Yamada et autres

Percutaneous endoscopic necrosectomy (PEN) is a vital salvage technique for infected walled-off necrosis (WON) caused by severe pancreatitis when transluminal access is anatomically unsafe or when the cavity extends into the pelvic region [ 1 ] [ 2 ] [ 3 ]. …

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Outcomes of Spiral Versus Conventional Double Pigtail Plastic Stents in Permanent Transpapillary Gallbladder Drainage for Acute Cholecystitis

Kiyoyuki Kobayashi, Yu Hidaka, Hideki Kamada, Maki Ayaki et autres

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Recovery of a migrated stent during endoscopic ultrasound-guided pancreatic pseudocyst drainage using a lithotripsy basket

Kiyoyuki Kobayashi, Hideki Kamada, Manabu Yamada, Daisuke Namima et autres

Endoscopic ultrasound-guided pancreatic pseudocyst drainage (EUS-PPD) is an established therapeutic approach, and the use of lumen-apposing metal stents (LAMSs) has increased in recent years. However, EUS-PPD with plastic stents (PSs) remains a valuable and cost-effective option for fluid-predominated pseudocysts. Recent studies have …

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Handmade snare technique for grasping and repositioning biliary stents via the endoscopic ultrasound-guided hepaticojejunostomy route

Daisuke Namima, Hideki Kamada, Yoshio Shimizu, Naoki Fujita et autres

Endoscopic ultrasound-guided hepaticogastrostomy/hepaticojejunostomy (EUS-HGS/HJS) is an established alternative to endoscopic retrograde cholangiopancreatography (ERCP) in patients with surgically altered anatomy [ 1 ] [ 2 ]. When combined with antegrade transpapillary stenting (AGS), dual-route biliary drainage can be secured [ 3 ] [ …

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