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PDQ Cancer Information Summaries [Internet]. Bethesda (MD): National Cancer Institute (US); 2002-.

Cover of PDQ Cancer Information Summaries

PDQ Cancer Information Summaries [Internet].

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Stage 0 colorectal carcinoma in situ; drawing shows a cross-section of the colon/rectum. An inset shows the layers of the colon/rectum wall with abnormal cells in the mucosa layer. Also shown are the submucosa, muscle layers, serosa, a blood vessel, and lymph nodes.

Stage 0 (colon carcinoma in situ). Abnormal cells are shown in the mucosa of the colon wall.

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