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The accessory pancreatic duct (also known as the duct of Santorini or Bernard) is derived from the embryological dorsal bud, and is formed by the part of the dorsal bud duct that remains after the dorsal and ventral ducts fuse to form the main pancreatic duct 15.
The duct diameter is greatest at the head and neck region and is slightly narrower towards the body and tail. Its normal reported value ranges between 1-3.5 mm in <50 year old and 2-5 mm in 70-79 year old individuals with mean reported values (rounded to the nearest 0.5 mm) being 5,8,11: head. 3.5 mm (<50 years)
Pancreatic divisum can result in a santorinicele, which is a cystic dilatation of the distal dorsal duct (duct of Santorini), immediately proximal to the minor papilla. Three subtypes are known: type 1 (classic): no connection at all; occurs in the majority of cases; 70%
Ectopic pancreatic tissue refers to pancreatic tissue that is located outside its usual anatomical location and lacks anatomic or vascular continuity with the pancreas.
Meandering main pancreatic duct (MMPD) denotes a main pancreatic duct that drains normally into the major papilla but performs a hairpin turn (reverse Z-type) or loop (loop-type) in the pancreatic head, in contradistinction to the smooth curvature seen in most cases.
An accessory right inferior hepatic vein is the most common variation of the hepatic veins, and may be multiple 1. It is present in up to 48% of the population and drains the posteroinferior part of the right lobe directly into the inferior vena cava (IVC) 1-3.
Intraductal papillary mucinous neoplasms or tumors (IPMNs or IMPTs) are epithelial pancreatic cystic tumors of mucin-producing cells that arise from the pancreatic ducts. They are most commonly seen in elderly patients.
The common bile duct travels initially in the free edge of the lesser omentum, then courses posteriorly to the duodenum and pancreas to unite with the main pancreatic duct to form the ampulla of Vater, which drains at the major duodenal papillae on the medial wall of the D2 segment of the duodenum 6.
accessory pancreas when head beneath mesenteric vessels separate. pancreatic duct variations. pancreatic clefts: linear clefts may be seen which contain fat where small vessels enter the pancreas and are a common mimic of pancreatic laceration. They are most prominent at the junction of the body and neck 2. intrapancreatic accessory spleen
CT features suggestive of a pancreatic stone may include: main duct dilatation secondary to luminal obstruction. hyperattenuation within the pancreatic duct suggestive of a stone. Other features that may raise suspicion of a potential stone include radiological features of chronic pancreatitis.