Ritsuko Oishi

Yokohama, Japan

Last Updated: 09/26/2026

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Found 90 publications

Side-by-side stent deployment of novel spiral covered metal stents for malignant distal biliary obstruction with a low-confluence posterior branch.

Side-by-side stent deployment of novel spiral covered metal stents for malignant distal biliary obstruction with a low-confluence posterior branch.

Journal: Endoscopy
Published: June 26, 2026

Antegrade partial stent-in-stent deployment through dual endosonographically-created routes for recurrent bile duct cancer after right hepatectomy with hepaticojejunostomy.

Antegrade partial stent-in-stent deployment through dual endosonographically-created routes for recurrent bile duct cancer after right hepatectomy with hepaticojejunostomy.

Journal: Endoscopy
Published: June 12, 2026

Long-Pulse Endoscopic Laser Lithotripsy for Right Intrahepatic Bile Duct Stones via an Endoscopic Ultrasound-Guided Created Route.

Long-Pulse Endoscopic Laser Lithotripsy for Right Intrahepatic Bile Duct Stones via an Endoscopic Ultrasound-Guided Created Route.

Journal: Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society
Published: June 02, 2026

Wall stretch sign to prevent trans-gastric lumen apposing metal stent deployment during endoscopic ultrasound-guided gallbladder drainage.

Wall stretch sign to prevent trans-gastric lumen apposing metal stent deployment during endoscopic ultrasound-guided gallbladder drainage.

Journal: Endoscopy
Published: June 01, 2026

Feasibility of Peroral Pancreatoscopy Using the 9-Fr eyeMAX for Surgical Planning in Main-Duct and Mixed-Type Intraductal Papillary Mucinous Neoplasms.

Feasibility of Peroral Pancreatoscopy Using the 9-Fr eyeMAX for Surgical Planning in Main-Duct and Mixed-Type Intraductal Papillary Mucinous Neoplasms.

Journal: Diagnostics (Basel, Switzerland)
Published: March 30, 2026

Vascular Features of Gallbladder Lesions Using Microvascular Flow Imaging on Transabdominal Ultrasonography: A Retrospective Study.

Vascular Features of Gallbladder Lesions Using Microvascular Flow Imaging on Transabdominal Ultrasonography: A Retrospective Study.

Journal: Diagnostics (Basel, Switzerland)
Published: March 25, 2026

Endoscopic ultrasound-guided hepaticogastrostomy using a novel double-lumen cannula designed for a 0.018-inch guidewire.

Endoscopic ultrasound-guided hepaticogastrostomy using a novel double-lumen cannula designed for a 0.018-inch guidewire.

Journal: Endoscopy
Published: February 13, 2026

Traction-band clip-assisted biliary cannulation for a papilla located in the horizontal limb after total gastrectomy.

Traction-band clip-assisted biliary cannulation for a papilla located in the horizontal limb after total gastrectomy.

Journal: Endoscopy
Published: February 03, 2026

Simultaneous bridging and antegrade stent-in-stent placement via endoscopic ultrasound-guided hepaticogastrostomy using novel multi-hole metal stents.

Simultaneous bridging and antegrade stent-in-stent placement via endoscopic ultrasound-guided hepaticogastrostomy using novel multi-hole metal stents.

Journal: Endoscopy
Published: January 22, 2026

Laser ablation for tumor ingrowth of the bridging stent via the endoscopic ultrasound-guided hepaticogastrostomy.

Laser ablation for tumor ingrowth of the bridging stent via the endoscopic ultrasound-guided hepaticogastrostomy.

Journal: Endoscopy
Published: January 20, 2026

Cholangioscopy-guided laser lithotripsy alongside a plastic stent for common bile duct stones after total gastrectomy.

Cholangioscopy-guided laser lithotripsy alongside a plastic stent for common bile duct stones after total gastrectomy.

Journal: Endoscopy
Published: January 15, 2026

Laser lithotripsy for refractory stones in the cystic duct and common bile duct.

Laser lithotripsy for refractory stones in the cystic duct and common bile duct.

Journal: Endoscopy
Published: January 15, 2026
Showing 1-12 of 90

Last Updated: 09/26/2026