Roy D. Yen

Gastroenterology

8110 Woodman Ave
Panorama City, CA 91402

Last Updated: 09/26/2026

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Found 17 publications

Advanced ERCP techniques for the extraction of complex biliary stones: a single referral center's 12-year experience.

Advanced ERCP techniques for the extraction of complex biliary stones: a single referral center's 12-year experience.

Journal: Scandinavian journal of gastroenterology

Published: April 13, 2018

Increasing Number of Passes Beyond 4 Does Not Increase Sensitivity of Detection of Pancreatic Malignancy by Endoscopic Ultrasound-Guided Fine-Needle Aspiration.

Increasing Number of Passes Beyond 4 Does Not Increase Sensitivity of Detection of Pancreatic Malignancy by Endoscopic Ultrasound-Guided Fine-Needle Aspiration.

Journal: Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association

Published: September 21, 2016

Pancreatic Duct Changes in Patients With Chronic Pancreatitis Treated With Polyethylene and Sof-Flex Material Stents: A Blinded Comparison.

Pancreatic Duct Changes in Patients With Chronic Pancreatitis Treated With Polyethylene and Sof-Flex Material Stents: A Blinded Comparison.

Journal: Pancreas

Published: January 12, 2016

Predictors for Surgical Referral in Patients With Pancreatic Cystic Lesions Undergoing Endoscopic Ultrasound: Results From a Large Multicenter Cohort Study.

Predictors for Surgical Referral in Patients With Pancreatic Cystic Lesions Undergoing Endoscopic Ultrasound: Results From a Large Multicenter Cohort Study.

Journal: Pancreas

Published: August 12, 2015

Interobserver agreement among cytopathologists in the evaluation of pancreatic endoscopic ultrasound-guided fine needle aspiration cytology specimens.

Interobserver agreement among cytopathologists in the evaluation of pancreatic endoscopic ultrasound-guided fine needle aspiration cytology specimens.

Journal: Endoscopy international open

Published: July 30, 2015

Variation in learning curves and competence for ERCP among advanced endoscopy trainees by using cumulative sum analysis.

Variation in learning curves and competence for ERCP among advanced endoscopy trainees by using cumulative sum analysis.

Journal: Gastrointestinal endoscopy

Published: July 24, 2015

The clinical impact of immediate on-site cytopathology evaluation during endoscopic ultrasound-guided fine needle aspiration of pancreatic masses: a prospective multicenter randomized controlled trial.

The clinical impact of immediate on-site cytopathology evaluation during endoscopic ultrasound-guided fine needle aspiration of pancreatic masses: a prospective multicenter randomized controlled trial.

Journal: The American journal of gastroenterology

Published: April 07, 2015

Suboptimal accuracy of carcinoembryonic antigen in differentiation of mucinous and nonmucinous pancreatic cysts: results of a large multicenter study.

Suboptimal accuracy of carcinoembryonic antigen in differentiation of mucinous and nonmucinous pancreatic cysts: results of a large multicenter study.

Journal: Gastrointestinal endoscopy

Published: January 30, 2015

Endoscopic and surgical treatment of malignant colorectal polyps: a population-based comparative study.

Endoscopic and surgical treatment of malignant colorectal polyps: a population-based comparative study.

Journal: Gastrointestinal endoscopy

Published: September 24, 2014

ERCP with per-oral pancreatoscopy-guided laser lithotripsy for calcific chronic pancreatitis: a multicenter U.S. experience.

ERCP with per-oral pancreatoscopy-guided laser lithotripsy for calcific chronic pancreatitis: a multicenter U.S. experience.

Journal: Gastrointestinal endoscopy

Published: August 21, 2014

Duodenal perforation secondary to migrated biliary stent in a liver transplant patient: successful endoscopic closure with an over-the-scope clip.

Duodenal perforation secondary to migrated biliary stent in a liver transplant patient: successful endoscopic closure with an over-the-scope clip.

Journal: Gastrointestinal endoscopy

Published: July 30, 2014

Endoscopic ultrasonography in esophageal cancer leads to improved survival rates: results from a population-based study.

Endoscopic ultrasonography in esophageal cancer leads to improved survival rates: results from a population-based study.

Journal: Cancer

Published: May 27, 2014

Showing 1-12 of 17

Last Updated: 09/26/2026