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General Surgery · Hepatobiliary and pancreatic surgery: unresectable pancreatic head cancer
Sample itemA 62-year-old man with a pancreatic head adenocarcinoma undergoes multiphase CT for staging. Which finding indicates locally advanced, unresectable disease?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Encasement of the superior mesenteric artery beyond 180 degrees
Circumferential involvement of the superior mesenteric artery (more than 180 degrees of encasement) indicates locally advanced disease that cannot be cleared by pancreaticoduodenectomy. Biliary and duct dilatation and nodes within the resection field do not preclude surgery.
Option by option
A. Encasement of the superior mesenteric artery beyond 180 degrees (correct)
Correct. Arterial encasement beyond half the circumference precludes curative resection.
B. Dilatation of the common bile duct and pancreatic duct
Double duct dilatation is the usual presentation of a resectable head tumour.
C. Enlarged nodes inside the planned resection field
Nodes within the resection field are removed during the operation.
D. A 3 cm tumour confined to the pancreatic head
A small localised head tumour is potentially resectable.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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