PMC8175251_01
Transabdominal ultrasound demonstrating a well-circumscribed hypoechoic pancreatic lesion without pancreatic ductal dilation. Red arrow denotes the lesion.
pancan.2020.0009_figure1.jpg
PMC8175251_01_pancan.2020.0009_figure1.jpg
f1
A hypoechoic 1.1 cm cystic mass without significant vascularity was identified in the body of the pancreas without ductal dilation (Fig. 1).
Magnetic resonance imaging of the pancreatic lesion. Red arrows denote the pancreatic lesion.
pancan.2020.0009_figure2.jpg
PMC8175251_01_pancan.2020.0009_figure2.jpg
f2
T2 hyperintensity and a very subtle hyperintense signal on diffusion weighted images. The lesion was isointense with the background pancreatic parenchyma on postcontrast images and was suspicious for a pNET or PDAC (Fig. 2).
Endoscopic ultrasound demonstrating a well-circumscribed hypoechoic pancreatic lesion without pancreatic ductal dilation. Red arrow denotes the pancreatic lesion.
pancan.2020.0009_figure3.jpg
PMC8175251_01_pancan.2020.0009_figure3.jpg
f3
An endoscopic ultrasound with fine needle aspiration (FNA) was performed and demonstrated a hypoechoic 11.3 mm by 8.3 mm oval mass in the pancreatic body with well-defined borders (Fig. 3).
Pathology of tumor and surrounding normal pancreas. (A) H&E low power view of tumor (upper half) and normal pancreas (lower half). (B) H&E higher power (20 x ) view of the neoplastic cell population with a rim of normal pancreas, lower right-hand corner. (C, D) Immunohistochemical stains of the same field at higher power, stained with hepatocyte marker Arginase 1 (C) and epithelial marker MOC-31 (D). H&E, hematoxylin and eosin; MOC-31, a monoclonal antibody against epithelial glycoprotein 2.
pancan.2020.0009_figure4.jpg
PMC8175251_01_pancan.2020.0009_figure4.jpg
f4
The final pathology was consistent with a 1.5 cm well-differentiated carcinoma with hepatoid features (Fig. 4).