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This small adenomatous polyp (tubular adenoma) on a small stalk is seen microscopically to have more crowded, disorganized glands than the normal underlying colonic mucosa. Goblet cells are less numerous and the cells lining the glands of the polyp have hyperchromatic nuclei. However, it is still well-differentiated and circumscribed, without invasion of the stalk, and is benign. Two colonoscopic views of a small polyp that proved to be a tubular adenoma is seen below. |