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Figure 2: Microscopic examination with hematoxylin-eosin staining. (a) Tumoral cells are showing a storiform growth pattern in the mucosa and submucosa (HE × 100). (b) Pleomorphic and bizarre tumor cells are with foamy cytoplasm and prominent atypia in the collagen stroma. Among the tumor cells, inflammatory cells and mitotic figures stand out. (HE × 200) |
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