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Hematoxylin and eosin staining of the lesions. A: The polypoid mass of the colon showing branching papillary projections composed of proliferated glands and thin fibrous stalks (× 10); B: The proliferated glands of the polyp (left) lined by single or pseudostratified hyperchromatic columnar cells as compared with normal colonic mucosa (right), but without any malignant changes (× 40).
