Pancreatic cancer, autoimmune or chronic pancreatitis, beyond tissue diagnosis: Collateral imaging and clinical characteristics may differentiate them

Figure 1 A 62-year-old male patient with a history of abdominal pain and jaundice. A: Contrast-enhanced abdominal tomography shows a poorly enhanced hypocaptured lesion (orange arrow); B: Magnetic resonance imaging (MRI) in the T2 sequence shows a hypointense lesion (orange arrow); C: MRI in the diffusion sequence shows a lesion with restriction (orange arrow); D: In magnetic resonance cholangiopancreatography, the double duct sign is evident; E: Macroscopic specimen of the head of the pancreas in which there is a whitish mass; F: Slides report poorly differentiated pancreatic ductal adenocarcinoma of the pancreas with high-grade signet ring cells with perineural infiltration and invasion of the duodenum and ampulla of Vater.