Figure 5: Photomicrograph (H and E, ×200) showing a paraganglioma disposed in lobules or nests separated by fibrovascular connective tissue (a). Individual tumor cells show round to ovoid nuclei, finely granular chromatin and granular amphophilic cytoplasm (b). Tumor cells are positive for synptophysin (c: ×200) and chromogranin (d: ×200) on IHC