632 / 1481
7 subsites were identified:
1. presacral space (PS)
2. mesorectum (M)
3. lateral lymph nodes (LLN)
4. external iliac nodes (EIN)
5. inguinal nodes (IN),
6. ischiorectal fossa (IRF)
7. sphincter complex (SC)
An
Inter-Society
Consensus in rectal cancer delineation