Figure 4
Macroscopic and pathological findings. The excised pancreas showed multiple cysts located in the branch pancreatic duct with total dimensions of 75 × 45 × 33 mm in the pancreas head. The mural nodule was 25 × 20 × 18 mm in size (A). Pathological examination revealed that it was composed of papillary structures consisting of mucin-containing columnar epithelial cells with low-grade atypia (B-D).