Ascending colon, cecum, appendix, and terminal ileum, extended right hemicolectomy: Adenocarcinoma, well differentiated 1. Location: ascending colon 2. Gross type: ulcerofungating 3. Size: 4x4 cm 4. Depth of invasion: invades muscularis propria(pT2) 5. Resection margin: free from carcinoma: safety margin: proximal, 22 cm ; distal, 8.5 cm ; radial, > 10.0 mm 6. Regional lymph node metastasis : No metastasis in all 25 regional lymph nodes(pN0) (0/25 : pericolic, 0/25), Number of Extramural Tumor Deposits: 0 7. Lymphatic invasion: not identified 8. Venous invasion: not identified 9. Perineural invasion: not identified 10. Tumor budding : negative 11. Micropapillary component: no 12. Tumor border: pushing 13. Pathologic staging: pT2 N0