Figure 1

Histopathological findings of gangliocytic paraganglioma in the collected 12 cases of duodenal gangliocytic paraganglioma (low-power field). Legend: Photomicrographs showing low-power field of 12 cases of duodenal gangliocytic paraganglioma (GP). Even among patients with GP, histopathological findings varied widely microscopically. Most frequently, GP exhibited nested and compactly arranged epithelioid cells with scant stroma (Panel A, B, D, E, F, H, I, J, and L; H & E staining; magnification: × 40, scale bar represents 100 μm). In contrast, some GPs exhibited relatively sporadic nests of epithelioid cells and a predominance of stromal cells (Panel C, G, and K; H & E staining; magnification: × 40, scale bar represents 100 μm). Panel A to L correspond to Case 1 to 12 of GP.