Figure 3: Ganglioneuroblastoma; (a) CT scan—a right parapharyngeal mass (arrow) with foci of calcification (arrowhead); (b) Section from core biopsy-differentiating neuroblasts with neuropil and Schwannian stroma (H and E, 40X); (c) Neuroblastic component with occasional differentiating neuroblasts (H and E, 40X); (d–f) Neuroblastic component shows a strong and diffuse expression of synaptophysin (d), S100 (e) and NSE (f) (IHC, 40X). CT—Computed tomography; H and E—Hematoxylin and eosin; IHC—Immunohistochemistry; NSE—Neuron-specific enolase