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Pancreatic Ductal Carcinoma

KEY FACTS Imaging Multiplanar, multiphasic CT or MR CT : Poorly marginated, hypodense mass with tendency to infiltrate posteriorly into retroperitoneum Strong tendency to obstruct pancreatic and common bile ducts, with abrupt ductal cutoff at site of obstruction Pancreatic parenchymal atrophy upstream from mass Soft tissue infiltration to involve adjacent vessels and organs (e.g., duodenum, bowel, stomach, and adrenals) Most common sites of distant metastatic disease…

Groove Pancreatitis

KEY FACTS Terminology Synonym: Cystic dystrophy of duodenal wall Chronic segmental pancreatitis in groove between duodenum and pancreatic head Distal common bile duct (CBD) traverses posterior aspect of groove You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Acute Pancreatitis and Complications

KEY FACTS Imaging Interstitial edematous pancreatitis (IEP) (70-80% of cases): Normal enhancement of pancreas without necrosis Pancreas typically enlarged and edematous Peripancreatic fat stranding, edema, and free fluid Mild edematous pancreatitis can appear normal on CT Necrotizing pancreatitis (NP) (20-30% of cases): Areas of nonenhancing parenchymal necrosis May necrose pancreatic duct as well Necrosis usually develops within 3-4 days after symptom onset Complications Infected pancreatic necrosis…

Annular Pancreas

KEY FACTS Terminology Pancreatic tissue that almost or completely encircles descending portion of duodenum You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here

Pancreas: Imaging Approach and Differential Diagnosis

Embryology and Normal Variants The body-tail segment of the pancreas develops from the embryologic dorsal pancreatic bud, while the head-uncinate segments develop from the ventral bud, which also gives rise to the liver and biliary tree. During normal development, the ventral bud migrates clockwise around the fetal duodenum and eventually merges with the dorsal bud to form the pancreas with the branching pancreatic and biliary ducts…

Biliary IPMN

KEY FACTS Terminology Mucin-producing papillary neoplasm of biliary mucosa Analogous to pancreatic intraductal papillary mucinous neoplasm in imaging and pathology Overlap with biliary papillomatosis (same entity?) You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here