Fig. 1

Contrast-enhanced CT axial (a) and coronal (b) images demonstrates a 2.0 cm, non-deforming mildly hypoattenuating mass in the pancreatic head (arrows) associated with obstruction of the pancreatic duct. MRCP (c): Confirms the dilatation of the pancreatic duct (8 mm in diameter) in the body of the pancreas. Note the associated dilatation of the Santorini duct (small arrows). FDG-PET/CT (d): The pancreatic lesion (arrow) shows avid ¹⁸F-fluorodeoxyglucose (FDG) uptake on the early image. The lesion increases in visual intensity on the delayed image on FDG-PET/CT