Fig. 1. (A) Gross image showing a circumscribed tumor with solid and cystic components. A focal area (black solid arrow) shows a yellowish mural nodule. Normal pancreatic parenchyma can be seen at the periphery of the tumor (red solid arrow). (B) Low power view showing different components of UC-OGC: multinucleated giant cells with interspersed mononuclear stromal cells (black solid arrow), osteoid (orange solid arrow) associated with a neoplastic epithelial component with a mucinous lining (green solid arrow) (H&E stain, 40x). (C) Low power view showing multinucleated osteoclast-like giant cells with interspersed mononuclear stromal cells (H&E stain, 100x). (D) High power view showing multinucleated osteoclast-like giant cells (black solid arrow) with interspersed mononuclear stromal cells and tumor giant cells (H&E stain, 100x). (E) Low power view showing neoplastic epithelial component with a mucinous lining (H&E stain, 40x). (F) Low power view showing a neoplastic epithelial component with a mucinous lining exhibiting dysplastic features (H&E stain, 100x).

Korean J Gastroenterol 2024;84:128~131 https://doi.org/10.4166/kjg.2024.059

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