Pancreas Flashcards
Expanded part;
is embraced by the C-shaped curve of the duodenum
Embryonic derivation: ventral & dorsal pancreatic bud
Location: lies in duodenal C loop
Head of pancreas
Short and overlies the superior mesenteric vessels
Embryonic derivation: dorsal pancreatic bud
Location: lies at the confluence of inferior vein & splenic vein
Neck of pancreas
To the left of SMA and SMV
Embryonic derivation: dorsal pancreatic bud
Body of pancreas
Closely related to the hilum of spleen and left colic flexure
Embryonic derivation: dorsal pancreatic bud
Location: related to the spleen
Tail of pancreas
Projection from the inferior part of head
extends medially to the left posterior to SMA
Embryonic derivation: Ventrally pancreatic bud
Uncinate process
Forms most of the head of the pancreas, including the uncinate process
Ventral pancreatic bud
Forms the remainder of the pancreas - head, body and tail
Dorsal pancreatic bud
A tumor involving the uncinate process of the pancreas will most likely compress what structure?
Superior mesenteric artery
Main pancreatic duct (Wirsung) begins in the tail of the pancreas and runs through the parenchyma to the head where it turns inferiorly and merges with the bile duct
Duct of pancreas
Blood supply of pancreas
Superior pancreatiocoduodenal artery from gastroduodenal (Hepatic - Celiac)
Inferior pancreaticoduodenal from SMA
Pancreatic arteries from Splenic
Blood supply of pancreas
Venous drainage of pancreas
PANCREATIC VEINS which are tributaries of the SPLENIC and SUPERIOR MESENTERIC; most of them empty into the splenic vein
Cancer involving the pancreatic head accounts for most cases of extrahepatic obstruction of the biliary system
Compresses and obstructs the bile duct causing OBSTRUCTIVE JAUNDICE resulting in the retention of bile pigments, enlargement of GB and jaundice
Cancer of neck and body may cause portal or IVC obstruction
Pancreatic cancer
A 36 y/o woman th yellow pigmentation of the skin and sclerae was diagnosed to have OBSTRUCTIVE JAUNDICE. What is the most likely cause?
Obstruction of the the main pancreatic duct
Ventral pancreatic bud fuses with dorsal pancreatic bud both dorsally & ventrally ➡️ ring of pancreatic tissue around duodenum ➡️ duodenal obstruction
Annular pancreas
Associated with biliary raft disease or alcoholism
Flank ecchymosis (Turney sign) or periumbilical ecchymosis (Cullen sign)
Acute pancreatitis
