Stage II colorectal cancer; shows a cross-section of the colon/rectum and a three-panel inset. Each panel shows the layers of the colon/rectum wall: mucosa, submucosa, muscle layers, and serosa. Also shown are a blood vessel and lymph nodes. First panel shows stage IIA with cancer in the mucosa, submucosa, muscle layers, and serosa. Second panel shows stage IIB with cancer in all layers and spreading through the serosa. Third panel shows stage IIC with cancer spreading to nearby organs.
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