Duodenal gangliocytic paraganglioma with lymph node metastases: A case report and comparative review of 31 cases

Figure 2 Fine needle aspiration biopsy and endoscopic tunneled biopsy of duodenal mass. A: Cellular specimen with predominantly bland epithelioid cells with round to oval nuclei, Diff-Quick stain, × 20; B: Rare large ganglion-like cells with eccentric nuclei and prominent nucleoli, Diff-Quick stain, × 40; C: Epithelioid tumor cells within the duodenal lamina propria/submucosa, endoscopic tunnel biopsy, H&E stain, × 20; D: Tumor cells with positive reactivity for synaptophysin, endoscopic tunnel biopsy, × 20.