case_images: PMC5200975_01
case_images: (a and b) Computerized tomography scans of the abdomen showing a subdiaphragmatic mass (shown with arrow). (c) Endoscopic ultrasound image showing the needle within the mass. (d) Clusters of polygonal cells with distinct borders, smooth nuclear contours, and abundant cytoplasm containing pigment (Diff-Quik, x40). (e) Cell block showing hepatic tissue with portal tracts (H and E, x20). (f) Hepatic tissue confirmed by arginase-1 immunostain
case_images: CJ-13-29-g001.jpg
case_images: PMC5200975_01_CJ-13-29-g001.jpg
case_images: F1
case_images: This showed a 2.6 cm enhancing mass adjacent to the fundus of the stomach and immediately below the diaphragm [Figure 1a and b]. Five passes were performed with a 22-gauge Shark Core needle (Medtronic, Dublin, Ireland) to maximize tissue acquisition [Figure 1c]. Cells had abundant granular cytoplasm which contained some pigments [Figure 1d]. Immunohistochemistry for arginase-1 confirmed that this was hepatic tissue [Figure 1e and f] and a reticulin stain demonstrated normal hepatic plates (figure not shown).