Toyonaga and colleagues present gel immersion endoscopic ultrasonography for ampullary tumors. They propose that gel immersion endoscopic ultrasonography is usefulness in evaluating of ampurally tumors because it allows clear and stable observation for an extended period with a low filling gel volume without papilla compression of the duodenal papilla.
Keywords: ampulla of Vater; ampullary cancer; endosonography; neoplasms.
© 2022 Japanese Society of Hepato-Biliary-Pancreatic Surgery.