| Cranial | Caudal |
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 | Left | Right | Left | Right |
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Anterior | A: 2 T2:1, T3:1 | B: 5 T2:5 | E: 2 T2:2 | F: 2 T3:1, T4:1 |
Posterior | C: 3 T2:3 | D: 3 T2:3 | G: 7 T2:5, T3:1Â T4:1 | H: 5 T2:2, T3:3 |
- The capital letters (A-H) indicate the name of subgroups and with patient numbers. The breakdown of patients by tumor stage is also shown. The cranial and caudal tumor groups consist of subgroups A, B, C, and D (n = 13) and E, F, G, and H (n = 16), respectively. In the same way, the anterior and posterior tumor groups consist of subgroups A, B, E, and F (n = 11) and C, D, G, and H (n = 18), respectively. The left and right tumor groups consist of subgroups A, C, E, and G (n = 14) and B, D, F, and H (n = 15), respectively