FIGURE 1 | Preliminary computed tomography and magnetic resonance imaging fi ndings (A) ACC in the tail of the pancreas. (B) ACC in the head of the pancreas. (C – F) ACC in a 66-year-old man. T1-weighted (C) and T2-weighted (D) images reveal a well-de fi ned cystic lesion in the pancreatic head indicated with an arrow. Diffusion-weighted imaging (E) shows the area of high signal, and ADC (F) reveals, on the contrary. (G) Immunohistochemical staining of the tumor cells. (H) This specimen is of a 7.5-cm, well-encapsulated mass obtained from the pancreatic tail through the Whipple resection. ACC, acinar cell