Pancreatic Ductal Carcinoma
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…
Acute Pancreatitis and Complications
Pancreas typically enlarged and edematous with loss of normal fatty lobulation Peripancreatic fat stranding, edema, and free fluid Mild edematous pancreatitis can appear normal on CT • Necrotizing pancreatitis (20-30% of…
Hepatic Transplantation
No reliable imaging findings to suggest or confirm diagnosis • Biliary leak From entry of T tube: Easily treated From biliary anastomosis: Requires revision From intrahepatic ducts: Biliary necrosis; catastrophic • Biliary…
Mesenteric and Small Bowel Trauma
Polygonal fluid collections between folds of mesentery, bowel loops Indicates bowel &/or mesenteric injury • Active bleeding = isodense with enhanced vessels • Extraluminal gas: Intra- or retroperitoneal air May be absent…
Pancreatic Trauma
Secondary signs of pancreatic injury are usually present (peripancreatic fat stranding and fluid, thickening of pararenal fascia, peripancreatic hematoma) – Peripancreatic signs of traumatic pancreatitis often subtle; more evident in 24-48…
Hepatic Adenoma
Almost all in young women with high estrogen environment, including steatosis and oral contraceptive use Anabolic steroids, diabetes, and glycogen storage disease are other causes • Key features (not always present):…
Imaging of Bariatric Surgery
Complications: Less common and less varied May be too tight or too loose May erode into stomach or esophagus • Sleeve gastrectomy (gastric sleeve) 75% of stomach is removed by dividing…
Crohn Disease
Faster to perform, less operator dependent, more sensitive and specific Allow assessment of extraintestinal disease Distend bowel with water ± neutral contrast agent (e.g., VoLumen) Bolus IV contrast medium at 3-4…
Pancreatic Neuroendocrine Tumors
Syndromic tumors: Small in size (usually < 3 cm) Nonsyndromic tumors usually much larger (> 5 cm) with frequent cystic and necrotic degeneration • Usually avidly enhancing on arterial phase images…
