Figure 1
From: Atypical florid vascular proliferation in appendix: a diagnostic dilemma
Morphology: (a) The superficial portion showed pyogenic granuloma-like findings on H&E (original magnification x 100). (b) Endothelial cells maintained vague lobular architectures and exhibited bland cellular morphology on H&E (original magnification x 40). (c) The deeper portion showed infiltrative growth into the muscularis propria on H&E (original magnification x 40). (d) Endothelial cells showed a positive result for CD34 (original magnification x 100).