T1 CRC Index • Submucosal Depth MatrixPatient Education GuidePedunculated (Haggitt)Sessile (Kikuchi)1Level 1Confined to Head2Level 2Involves Neck3Level 3Involves Stalk4Level 4Invades BaseSelect the polyp morphology and invasion depth recorded in the pathology report to visualize the lymph node metastatic risk profile.