Long-term survival of a patient with a large adrenal primitive neuroectodermal tumor: A case report

Figure 3 Pathological changes of the tumor. A: Hematoxylin and eosin staining revealed small round tumor cells and several lobulated structures (Homer–Wright rosettes) (200 ×); B: Immunohistochemistry showed tumor cells were positive for CD99 (100 ×); C: Immunohistochemistry showed tumor cells were positive for neuron-specific enolase (100 ×); D: Immunohistochemistry showed tumor cells were positive for synaptophysin (100 ×).