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Table 3 Locations of epicentres that were marginal or outside of RTOG and ESTRO Nodal CTVs

From: PET/CT of breast cancer regional nodal recurrences: an evaluation of contouring atlases

RTOG CTVs Classification of RNRs
(Percentage for RTOG CTV)
Direction of Marginal or Outside RNR compared to RTOG CTVs
Number (Percentage of all 68 Marginal and Outside RNRs)
RNR
n = 226
Outside
n = 60
Marginal
n = 8
Inside
n = 158
CranialCaudalAnteriorPosteriorLateralMedial
SCF5628 (50%)1 (2%)27 (48%)5 (7%)  21 (31%)*3 (4%) 
Axilla level I646 (9%)058 (91%)1 (1%)1 (1%)1 (1%)1 (1%)2 (3%) 
Axilla level II3711 (30%)1 (3%)25 (68%)3 (4%)12 (18%)†2 (3%)   
Axilla level III359 (17%)1 (3%)25 (80%)3 (4%)3 (4%) 1(1%)1 (1%)2 (3%)
IMC346 (18%)5 (15%)23 (68%) 2 (3%)  2 (3%)7 (10%)
* RADCOMP Posterior Neck213 (14%)°018 (86%)3 (100%)     
ESTRO-CTVs Classification of RNRs
(Percentage for ESTRO-CTV)
Direction of Marginal or Outside RNR compared to ESTRO-CTVs
Number (Percentage of all 61 Marginal and Outside RNRs)
 RNR
n = 226
Outside
n = 57
Marginal
n = 4
Inside
n = 165
CranialCaudalAnteriorPosteriorLateralMedial
SCF5633 (59%)1 (2%)22 (39%)9 (15%)  21 (34%)*3 (5%)1 (2%)
Axilla Level I648 (13%)056 (87%)1 (1%)1 (1%)1 (1%)4 (7%)1 (1%) 
Axilla Level II276 (22%)021 (78%)3 (5%)1 (1%) 2 (3%)  
Interpectoral110011 (100%)      
Axilla Level III347 (12%)1 (3%)26 (85%)3 (5%)3 (5%)   2 (3%)
IMC343 (9%)2 (6%)29 (85%) 2 (3%)   3 (3%)
* RADCOMP Posterior Neck213 (14%)°018 (86%)3 (100%)     
  1. Abbreviation: RNR Regional nodal recurrence