**3.3 Stage I colon cancer**

Stage 1 colon cancer is often an incidental finding in those patients undergoing polypectomy. Therefore, pedunculated polyps should be resected with excision of the stalk down to the base. When stage 1 colon cancer is found in a polyp that was completely excised with clear margin of more than 2 mm, further surgical excision may not be required, provided there are no high risk features such as lymphovascular invasion, poor cell differentiation, and malignant invasion beyond stalk. Such patients with high risk features should undergo further excision like segmental resection for complete staging. Sessile polyps with invasive cancers also can be managed with segmental colon resection unless they can be removed in one piece [9]. An estimated 5% of resected polyps and 20% of unresectable polyps contain invasive cancer [10]. Five-year survival rate for stage 1 colon cancer is more than 95%, and adjuvant therapy is not indicated [11].
