Case Report
Copyright ©The Author(s) 2022.
World J Clin Cases. Feb 26, 2022; 10(6): 2007-2014
Published online Feb 26, 2022. doi: 10.12998/wjcc.v10.i6.2007
Figure 2
Figure 2 Features of tumor cells. A: The tumor was located in the submucosal layer of the duodenum (Hematoxylin-and-eosin stain, ×20); B: At a higher magnification, undifferentiated tumor cells were shown to have marked nuclear atypia with brisk mitotic activity (Hematoxylin-and-eosin stain, ×200); C: Immunohistochemistry revealed positivity for MDM2 in the tumor cells (Immunohistochemistry, ×200); D: MDM2 amplification was detected by MDM2/CEN12 fluorescence in situ hybridization assay (MDM2-green signals, CEN12-red signals, ×1000).