external iliac or presacral lymph node) N2 Single lymph node metastasis, more than 2 cm but not more than 5 cm in greatest dimension; or multiple lymph nodes, none more than 5 cm in greatest ...

The primary tumor/anal canal and rectum and mesorectal, presacral, internal and external iliac, obturator, and inguinal lymph nodes should be included in RT target volumes. The authors also ...