Table 1 Patient demographics and clinical characteristics
From: Clinicopathologic analysis of lymph node status in superficial esophageal squamous carcinoma
Variables | Value (%) |
|---|---|
Number | 498 |
Age (years) mean ± SD (range) | 60.74 ± 7.21 (36–80) |
Gender (M/F) | 367/131 |
Tumor location (%) | |
Cervical | 16 (3.2) |
Upper thoracic | 90 (18.1) |
Middle thoracic | 248 (49.8) |
Lower thoracic | 144 (28.9) |
Tumor size (cm) | |
Mean ± SD (range) | 1.83 ± 1.02 (0.1–6.5) |
Pathologic appearance (%) | |
Erosive type | 99 (19.9) |
Ulcerative type | 123 (24.7) |
Fungating type | 84 (16.9) |
Other types | 66 (13.3) |
Unavailable | 126 (25.3) |
Differentiation (%) | |
I | 24 (4.8) |
I–II | 71 (14.3) |
II | 185 (37.1) |
II–III | 86 (17.3) |
III | 46 (9.2) |
Unavailable | 86 (17.3) |
Depth of invasion (%) | |
m1 | 43 (8.6) |
m2 | 37 (7.4) |
m3 | 80 (16.1) |
sm1 | 88 (17.7) |
sm2 | 113 (22.7) |
sm3 | 137 (27.5) |
Multicentric invasion (%) | |
Absent | 487 (97.8) |
Present | 11 (2.2) |
Angiolymphatic invasion (%) | |
Absent | 467 (93.8) |
Present | 31 (6.2) |