Case Report
Copyright ©The Author(s) 2021.
World J Clin Cases. Aug 6, 2021; 9(22): 6450-6456
Published online Aug 6, 2021. doi: 10.12998/wjcc.v9.i22.6450
Figure 3
Figure 3 Pathological findings. A: Hematoxylin and eosin-stained sections (× 200 magnification) demonstrate a well-differentiated neoplasm with the trabecular and glandular architectural pattern; B: The Ki-67 proliferation index (× 100 magnification) is 15% in tumor cells; C-F: Immunohistochemical staining (× 100 magnification) reveals positive immunoreactivities for CD56 (C), cytokeratin AE1/AE3 (D), synaptophysin (E), and negative immunoreactivity for chromogranin A (F), respectively.