Kazumasa Nagai

Tokyo, Japan

Last Updated: 09/26/2026

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Found 70 publications

Prospective Clinical Evaluation of a Novel Repositionable Plastic Stent for Endosonography-Guided Hepaticogastrostomy With or Without Antegrade Stenting (With Videos).

Prospective Clinical Evaluation of a Novel Repositionable Plastic Stent for Endosonography-Guided Hepaticogastrostomy With or Without Antegrade Stenting (With Videos).

Journal: Journal of gastroenterology and hepatology

Published: May 01, 2026

Ultra-slim pancreatoscopy-guided laser lithotripsy for retrieval of a kinked guidewire caused by a pancreatic duct stone.

Ultra-slim pancreatoscopy-guided laser lithotripsy for retrieval of a kinked guidewire caused by a pancreatic duct stone.

Journal: Endoscopy

Published: April 24, 2026

The clinical utility and diagnostic performance of transabdominal contrast-enhanced ultrasonography using Sonazoid for pancreatic diseases: a narrative review.

The clinical utility and diagnostic performance of transabdominal contrast-enhanced ultrasonography using Sonazoid for pancreatic diseases: a narrative review.

Journal: Journal of medical ultrasonics (2001)

Published: April 14, 2026

Clinical Evaluation of the Effectiveness of Digital Peroral Cholangioscopy-Guided Lithotripsy for Difficult Bile Duct Stones.

Clinical Evaluation of the Effectiveness of Digital Peroral Cholangioscopy-Guided Lithotripsy for Difficult Bile Duct Stones.

Journal: Journal of hepato-biliary-pancreatic sciences

Published: March 19, 2026

Clinical Utility and Safety of a Novel Ultraslim Catheter-Type Peroral Cholangioscope/Pancreatoscope: A Single-Center Case Series.

Clinical Utility and Safety of a Novel Ultraslim Catheter-Type Peroral Cholangioscope/Pancreatoscope: A Single-Center Case Series.

Journal: DEN open

Published: February 23, 2026

Efficacy of Endoscopic Ultrasound-guided Fine Needle Biopsy With Simplified Macroscopic On-site Evaluation (With Video).

Efficacy of Endoscopic Ultrasound-guided Fine Needle Biopsy With Simplified Macroscopic On-site Evaluation (With Video).

Journal: DEN open

Published: February 19, 2026

Novel one-step deployment of Y-shaped metal stent: no more stent-in-stent or side-by-side.

Novel one-step deployment of Y-shaped metal stent: no more stent-in-stent or side-by-side.

Journal: Endoscopy

Published: February 13, 2026

Effectiveness of immediate contrast-enhanced evaluation after endoscopic ultrasound-guided ethanol injection for a pancreatic neuroendocrine tumor.

Effectiveness of immediate contrast-enhanced evaluation after endoscopic ultrasound-guided ethanol injection for a pancreatic neuroendocrine tumor.

Journal: Endoscopy

Published: January 20, 2026

Long-term outcomes of plastic versus metal stents for preoperative biliary drainage in pancreatic cancer: a nationwide propensity score-matched analysis.

Long-term outcomes of plastic versus metal stents for preoperative biliary drainage in pancreatic cancer: a nationwide propensity score-matched analysis.

Journal: Gastrointestinal endoscopy

Published: October 22, 2025

Initial Experience Using the Over-The-Scope-Grasper for Endoscopic Necrosectomy in Walled-Off Necrosis.

Initial Experience Using the Over-The-Scope-Grasper for Endoscopic Necrosectomy in Walled-Off Necrosis.

Journal: Journal of hepato-biliary-pancreatic sciences

Published: August 28, 2025

Clinical Application of Ultra-Slim Peroral Cholangioscopy for a Giant Common Bile Duct Stone: An Initial Experience.

Clinical Application of Ultra-Slim Peroral Cholangioscopy for a Giant Common Bile Duct Stone: An Initial Experience.

Journal: Journal of hepato-biliary-pancreatic sciences

Published: August 12, 2025

Endoscopic Step-up Approach for Walled-off Necrosis After Acute Pancreatitis.

Endoscopic Step-up Approach for Walled-off Necrosis After Acute Pancreatitis.

Journal: DEN open

Published: July 05, 2025

Showing 1-12 of 70

Last Updated: 09/26/2026