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Thomas' sign is the production of silver stools and can be indicative of cancer of the Ampulla of Vater. The ampulla of Vater is the site of tumors, often with a threatening prognosis and difficult surgical treatment. The silver-colored stool is a combination of the white stool of obstructive jaundice combined with black stool of melena or ...
The sphincter regulates the secretion of pancreatic juice and bile into the duodenum. [3] It also prevents reflux of duodenal contents into the ampulla of Vater. [4] By preventing reflux of the contents of the duodenum, the sphincter of Oddi prevents the accumulation of particulate matter and sludge in the bile ducts, reducing the risk of cholangitis.
Periampullary cancer is a cancer that forms near the ampulla of Vater, an enlargement of the ducts from the liver and pancreas where they join and enter the small intestine. [1] It consists of: ampullary tumour from ampulla of Vater; cancer of lower common bile duct; duodenal cancer adjacent to ampulla; carcinoma head of pancreas
Functional disorders of the gallbladder, bile duct and pancreas have been defined and classified by the Rome criteria for functional gastrointestinal disorders. [2] The criteria outline three variants of functional disorders of the gallbladder, bile duct and pancreas, termed functional gallbladder disorder, functional biliary sphincter of Oddi disorder and functional pancreatic sphincter of ...
Vater is primarily known for his work in anatomy, but he also published works in the fields of chemistry, botany, pharmacology and gynaecology. He was the first to describe the hepatopancreatic ampulla, which is the juncture of the pancreatic duct and the common bile duct, and is now referred to as the ampulla of Vater.
The path is as follows: bile canaliculi → canals of Hering → interlobular bile ducts → intrahepatic bile ducts → left and right hepatic ducts merge to form → common hepatic duct exits liver and joins → cystic duct (from gall bladder) forming → common bile duct → joins with pancreatic duct → forming ampulla of Vater → enters ...
The pancreatic duct joins the common bile duct just prior to the ampulla of Vater, after which both ducts perforate the medial side of the second portion of the duodenum at the major duodenal papilla. There are many anatomical variants reported, but these are quite rare.
[1] [2] It occurs just before the junction with the pancreatic duct, where the ampulla of Vater is formed. [1] Occasionally, some fibres also surround the pancreatic duct. [2] It is subdivided into two parts - pars superior and pars inferior. The pars inferior is the strongest component of the sphincter of Oddi complex. [3] [4]