Autoimmune pancreatitis

Case contributed by Dr Michael P Hartung

Presentation

Abdominal pain, elevated lipase.

Patient Data

Age: 55 years
Gender: Male
CT

Diffuse pancreatic enlargement with sausage shape and halo. Small parenchymal calcification. No ductal dilation.

Note relative lack of peripancreatic inflammation or fluid. 

Case Discussion

Typical imaging findings of autoimmune pancreatitis with sausage shape and halo. 

Serum IgG4 levels were greater than 300 mg/dL, helping to confirm this diagnosis. These imaging findings are important to identify as the patients can avoid more extensive workup (such as ERCP or biopsy) and can be treated more promptly with steroids. 

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