Radiation Oncology/Carcinoid/Appendix

Appendiceal Carcinoid
 * For other carcinoid tumors, see Carcinoids

Staging
Was added as a separate classification starting with the 7th edition of the AJCC Staging Manual. Carcinoids were not previously classified by the AJCC.

There is a separate staging system for carcinomas arising within the appendix. Carcinoid tumors arising in other segments of the gastrointestinal tract are staged separately.

AJCC 7th Edition (2009) Primary Tumor Regional Lymph Nodes Distant Metastasis Stage Grouping
 * T1 - 2 cm or less
 * T1a - 1 cm or less
 * T1b - >1 cm and 2cm or less
 * T2 - >2 cm and 4 cm or less, or with extension to the cecum
 * T3 - >4 cm, or with extension to the ileum
 * T4 - directly invades other adjacent organs or structures (e.g., abdominal wall, skeletal muscle; penetration of the mesoappendix is not included)
 * N0 - none
 * N1 - yes
 * M0 - none
 * M1 - yes
 * I - T1 N0
 * II - T2-3 N0
 * III - T4 or N1
 * IV - M1