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 | Cranial | Caudal | Anterior | Posterior | Lateral | Medial | |
| SCF | 56 | 28 (50%) | 1 (2%) | 27 (48%) | 5 (7%) | 21 (31%)* | 3 (4%) | |||
| Axilla level I | 64 | 6 (9%) | 0 | 58 (91%) | 1 (1%) | 1 (1%) | 1 (1%) | 1 (1%) | 2 (3%) | |
| Axilla level II | 37 | 11 (30%) | 1 (3%) | 25 (68%) | 3 (4%) | 12 (18%)† | 2 (3%) | |||
| Axilla level III | 35 | 9 (17%) | 1 (3%) | 25 (80%) | 3 (4%) | 3 (4%) | 1(1%) | 1 (1%) | 2 (3%) | |
| IMC | 34 | 6 (18%) | 5 (15%) | 23 (68%) | 2 (3%) | 2 (3%) | 7 (10%) | |||
| * RADCOMP Posterior Neck | 21 | 3 (14%)° | 0 | 18 (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 | Cranial | Caudal | Anterior | Posterior | Lateral | Medial | |
| SCF | 56 | 33 (59%) | 1 (2%) | 22 (39%) | 9 (15%) | 21 (34%)* | 3 (5%) | 1 (2%) | ||
| Axilla Level I | 64 | 8 (13%) | 0 | 56 (87%) | 1 (1%) | 1 (1%) | 1 (1%) | 4 (7%) | 1 (1%) | |
| Axilla Level II | 27 | 6 (22%) | 0 | 21 (78%) | 3 (5%) | 1 (1%) | 2 (3%) | |||
| Interpectoral | 11 | 0 | 0 | 11 (100%) | ||||||
| Axilla Level III | 34 | 7 (12%) | 1 (3%) | 26 (85%) | 3 (5%) | 3 (5%) | 2 (3%) | |||
| IMC | 34 | 3 (9%) | 2 (6%) | 29 (85%) | 2 (3%) | 3 (3%) | ||||
| * RADCOMP Posterior Neck | 21 | 3 (14%)° | 0 | 18 (86%) | 3 (100%) | |||||