Use of yttrium-90 radioembolization to control liver metastases in pancreatic acinar cell carcinoma and pancreatoblastoma: Two case reports

Figure 1 Representative histopathology and immunohistochemical staining of pancreatic acinar cell carcinoma and pancreatoblastoma. A: Pancreatic acinar cell carcinoma (PACC) patient, hematoxylin and eosin 40 ×: The tumor is composed of sheet-like epithelioid cells, some of them forming acinar structures; B: PACC patient immunohistochemistry 20 ×: The tumor demonstrates cytoplasmic positivity of trypsin. A diagnostic feature of PACC; C: Pancreatoblastoma patient, hematoxylin and eosin 40 ×: Tumor consists of epithelioid cells, some of which form acinar structures with a central lumen.