Table 1.
Characteristics of patients with pN0 oesophageal cancer (n = 137).
| Characteristic | Number of patients | Percentage |
|---|---|---|
| Age | ||
| < 65 years | 55 | 40.1 |
| ≥ 65 years | 82 | 59.9 |
| Sex | ||
| Female | 43 | 31.4 |
| Male | 94 | 68.6 |
| Histology | ||
| Adenocarcinoma | 88 | 64.2 |
| Squamous cell carcinoma | 49 | 35.8 |
| Tumour location | ||
| Upper oesophagus | 5 | 3.6 |
| Middle oesophagus | 28 | 20.4 |
| Lower oesophagus | 56 | 40.9 |
| Gastro-oesophageal junction | 48 | 35.0 |
| Histological grade | ||
| G1 (well differentiated) | 19 | 13.9 |
| G2 (moderately differentiated) | 74 | 54.0 |
| G3 (poorly differentiated) | 44 | 32.1 |
| Presence of lymphovascular invasion | ||
| No | 113 | 82.5 |
| Yes | 24 | 17.5 |
| Tumour stage (AJCC 8th edition) | ||
| I | 64 | 46.7 |
| II | 47 | 34.3 |
| III | 23 | 16.8 |
| IV | 3 | 2.2 |
| Number of nodes resected | ||
| < 17 | 66 | 48.2 |
| ≥ 17 | 71 | 51.8 |
| Neoadjuvant therapy | ||
| None | 69 | 50.3 |
| Radiotherapy | 13 | 9.5 |
| Chemotherapy | 43 | 31.4 |
| Chemoradiotherapy | 12 | 8.8 |
| Adjuvant chemotherapy | ||
| No | 121 | 88.3 |
| Yes | 16 | 11.7 |