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The Major pancreatic duct, or Duct of Wirsung 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.
Accessory pancreatic duct or the Duct ofSantoriniopens into the duodenum about 2.5 cm. above the duodenal papilla. It receives the ducts from the lower part of the head,
Pancreas is a Retroperitoneal organ!!!!
Aorta & IVC lie behind the neck & body of the pancreas,
Both superior mesenteric artery and vein pass anteriorly to the uncinate process .
Splenic vein moves at the at the posterior aspect of the pancreas & unites with superior mesenteric vein to form the portal vein which lie behind the neck of pancreas.
The splenic artery lie at the upper border of the pancreas.
Under a microscope, stained sections of the pancreas reveal two different types of parenchymal tissue Lightly staining clusters of cells are called islets of langerhans, which produce hormones (e.g Insulin) Darker staining cells form acini connected to ducts. Acinar cells belong to the exocrine function and secrete digestive enzymes into the gut via a system of ducts.
Indirect imaging involves non-invasive radiologic techniques including:
Direct imaging involves invasive radiologic procedures, which include:
The pancreas is not directly visualized on plain films of the abdomen. Calcifications in the pancreatic region or biliary lithiasis can sometimes be demonstrated. The presence of adynamic ileus of the duodenum& the proximal small bowel loops (sentinel loop) can be an important sign in acute disorders.
How can you identify the pancreas at US?
The body of the pancreas is usually found anterior to the splenic vein. In some patients however, body habitus and bowel gas may limit complete visualization.
>Pancreatic Diseases--Acute gallstone pancreatitis--Recurrent acute pancreatitis--Chronic pancreatitis--Pancreatic pseudocyst, abcess--Pancreatic tumors
Cannulation of the major duodenal papilla and injection of contrast material reveals only a short segment of the main pancreatic duct
Cannulation of the minor duodenal papilla and opacification of the dorsal pancreatic duct