331 / 1778
Above the
field
71
In-field
59
Inguinal
2
39
2
2
5
Beadle BM, et al. IJROBP 2010
MD Anderson series
Pelvis: 45 Gy in 25 fx
Extended field if ≥ common iliac N+
Dose to positive N: Pelvis ≥ 60 Gy; PAo 45 – 50 Gy
Patterns of Nodal Recurrence
66%: component of marginal failure
58%: component of in-filed failure
Geographical miss
Detection & D - deficiency
180 patients with recurrence
Tailor elective target
Improve detection of N+
Apply adequate D to N+