Table 2 Primary tumor location, tumor invasion depth and areas of nodal metastasis
Total | Tumor location | Tumor invasive depth | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
N = 228 (%) | Upper (n = 34)(%) | Mid (n = 125)(%) | Lower (n = 69)(%) | P value | M3 (n = 35)(%) | SM1 (n = 57)(%) | SM2 (n = 61)(%) | SM3 (n = 48)(%) | P value | |
Cervical | 23 (10.1) | 8 (23.5) | 14 (11.2) | 1 (1.4) | 0.002 | 2 (5.7) | 3 (5.3) | 6 (9.8) | 12 (25.0) | 0.002 |
Upper mediastinum | 48 (21.1) | 15 (44.1) | 29 (23.2) | 4 (5.8) | < 0.001 | 1 (2.9) | 12 (21.1) | 16 (26.2) | 19 (39.6) | < 0.001 |
Mid-mediastinum | 12 (5.3) | 2 (5.9) | 8 (6.4) | 2 (2.9) | NS | 1 (2.9) | 2 (3.5) | 1 (1.6) | 8 (16.7) | 0.003 |
Lower mediastinum | 21 (9.2) | 2 (5.9) | 12 (9.6) | 7 (10.1) | NS | 2 (5.7) | 5 (8.8) | 4 (6.6) | 10 (20.8) | 0.02 |
Perigastric | 47 (20.6) | 2 (5.9) | 26 (20.8) | 19 (27.5) | 0.038 | 3 (8.6) | 10 (17.5) | 14 (23.0) | 20 (41.7) | < 0.001 |