Tumor ≤ 2 cm, incomplete resection, US, MRI/CT, CgA, 5-HIAA: ileocecal resection and local lymph node sampling (if positive: RHC) Tumor > 2 cm, complete resection, US, MRI/CT, CgA, 5-HIAA positive: RHCTumor > 2 cm, complete resection, US, MRI/CT, CgA, 5-HIAA negative: ileocecal resection and local lymph node sampling (if positive: RHC) Tumor > 2 cm, incomplete resection: RHC. This evidence concerns the gene CGA and neoplasm.