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  Indian J Med Microbiol
 

Figure 4: (a) The tumor is composed of cell balls of neoplastic cells with small oval granular nuclei and abundant granular cytoplasm (H and E, ×200). (b) The tumor cells are positive for chromogranin (immunohistochemical, ×200)

Figure 4: (a) The tumor is composed of cell balls of neoplastic cells with small oval granular nuclei and abundant granular cytoplasm (H and E, ×200). (b) The tumor cells are positive for chromogranin (immunohistochemical, ×200)