Multifocal autoimmune pancreatitis (AIP) (71 y, male). Contrast-enhanced MDCT a arterial and b portal-venous phases shows a hypoattenuating mass in the head and uncinate process with progressive enhancement in the portal-venous phase. MFCP or PDAC have to be considered in the differential diagnosis. c Curved-planar reformation shows not only the mass in the head, which obstructs the panc. duct, but also two smaller lesions in the tail (arrows). There are no signs of CP elsewhere. Multifocality is a clue to the diagnosis of AIP.