Table 1 The characteristics of the patients with pT1 ESCC
From: A nomogram to predict lymph node metastasis risk for early esophageal squamous cell carcinoma
Variables | Derivation, n = 223 (%) | Validation, n = 80 (%) |
|---|---|---|
Sex, male/female | 189/34 | 69/11 |
Age: median (range) | 59 (42–77) | 62 (42–75) |
Location | ||
Upper | 13 (5.8) | 7 (8.8) |
Middle | 112 (50.2) | 49 (61.3) |
Lower | 98 (44.0) | 24 (30) |
Tumor number | ||
Single | 200 (89.7) | 71 (88.8) |
Mutifocal | 23 (10.3) | 9 (11.3) |
Tumor size, cm: median (range) | 2.0 cm (0.3–7.0 cm) | 2.0 cm (0.6–8.0 cm) |
Harvested lymph nodes: median (range) | 19 (0–85) | 19 (3–76) |
Surgery | ||
Sweet | 5 (2.2) | 0 |
Ivor-Lewis | 52 (23.3) | 3 (3.75) |
Mckeown | 21 (9.4) | 2 (2.5) |
Minimally invasively esophagectomy | 145 (65.0) | 75 (93.7) |
cT stage | ||
cT1a | 65 (29.1) | 37 (46.3) |
cT1b | 20 (9.0) | 21 (26.3) |
cT2 | 6 (2.7) | 6 (7.5) |
cT3 | 7 (3.1) | 3 (3.8) |
Unknown | 125 (56.1) | 13 (16.3) |
Differentiation | ||
High-middle | 188 (84.3) | 65 (81.3) |
Low | 35 (15.7) | 15 (18.8) |
Depth of invasion | ||
Mucosal epithelial | 34 (15.2) | 8 (10) |
Lamina propria mucosa | 4 (1.3) | 3 (3.8) |
Muscularis mucosae | 44 (19.7) | 20 (25) |
Submucosal | 141 (63.7) | 49 (61.3) |
Lymphovascular invasion | ||
Not reported | 207 (92.8) | 77 (96.3) |
Reported | 16 (7.2) | 3 (3.75) |
Lymph node metastasis | ||
N0 | 187 (83.9) | 67 (83.9) |
N1 | 30 (13.5) | 9 (13.5) |
N2 | 6 (2.7) | 3 (2.7) |
N3 | 0 (0) | 1 (1.25) |