Intermediate
Technical
IVT
ampulla of Vater
Pronunciation: am-PUL-ah of VAH-ter
The anatomical structure where the common bile duct and pancreatic duct join before entering the duodenum.
Full Definition
The ampulla of Vater is a small, dilated duct located within the duodenal wall where the common bile duct and main pancreatic duct converge before emptying into the second portion of the duodenum. This structure is surrounded by the sphincter of Oddi, which regulates the flow of bile and pancreatic secretions. The ampulla is a common site for benign and malignant lesions, including ampullary adenomas and adenocarcinomas, which can cause biliary obstruction and require specialized endoscopic or surgical management.
Usage
Usage note: Named after Abraham Vater; often shortened to 'ampulla' in clinical context.
In Context
- "ERCP demonstrated a polypoid lesion at the ampulla of Vater with associated biliary dilation." — Endoscopy report
- "Biopsy of the ampulla of Vater revealed high-grade dysplasia requiring surgical resection." — Pathology report
Also known as
ampulla
hepatopancreatic ampulla
Don't confuse with
papilla of Vater
sphincter of Oddi
ampullary carcinoma