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Fig. 5 —65-year-old woman with pancreatic head carcinoma.
Low-attenuation area is present in posterior aspect of pancreatic head
(arrowhead), which is enlarged. This area was considered tumor by one
reader and capsule-like rim by two readers. Biliary stent is in place. One
reader correctly diagnosed carcinoma, and two readers considered diagnosis
indeterminate between carcinoma and autoimmune pancreatitis.