Autoimmune pancreatitis in the context of IgG4-related disease: Review of imaging findings

Table 1 Imaging findings favoring a diagnosis of autoimmune pancreatitis rather than pancreatic cancer

Diffuse pancreatic enlargement

Delayed enhancement of affected pancreas

Long segment MPD narrowing

MPD dilatation not in excess of 4-5 mm

Multiple sites of MPD narrowing

“Capsule” sign

“Penetrating duct” sign

Low ADC value reflecting restricted diffusion on diffusion weighted MR imaging[51,52]

Improvement of findings following short course of corticosteroid therapy

MPD: Main pancreatic duct; ADC: Apparent diffusion coefficient.