case_images: PMC6145538_01
case_images: Abdominal CT scan revealing a 7 cm hypervascular mass (arrow) involving the splenic vein. Typically, RCC metastases are hypervascular with contrast enhancement, multicentric, and without peripancreatic lymphadenopathy. CT, computed tomography; RCC, renal cell carcinoma.
case_images: fig-1.jpg
case_images: PMC6145538_01_fig-1.jpg
case_images: f1
case_images: A 70-year-old man presented in 2017 after discovery of a hypervascular, expansile, 7 cm pancreatic body mass involving the splenic vein on routine surveillance CT scan (Fig. 1).
case_images: (A) Gross specimen including the pancreatic mass (left) and spleen (right). (B) Histology of pancreatic mass (H&E, 20x ). At lower power, the tumor cells are arranged in alveolar and solid growth pattern, with rich network of small thin-walled blood vessels. (C) Histology of pancreatic mass (H&E, 200x ). At higher power, the lesional cells have clear cytoplasm with distinct cell borders, with large and round nuclei. H&E, hematoxylin and eosin.
case_images: fig-2.jpg
case_images: PMC6145538_01_fig-2.jpg
case_images: f2
case_images: Grossly, a 6.5 x 6.2 x 4.5 cm well-circumscribed mass is located within the pancreatic parenchyma (Fig. 2A). Histologically, the tumor has alveolar and solid growth pattern, with rich network of small thin-walled blood vessels (Fig. 2B). At higher power, the lesional cells have clear cytoplasm with distinct cell borders, with large and round nuclei (Fig. 2C).