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Patients characteristics
| Number of patients | 21 |
| Age at diagnosis (years) | 64 ± 18 |
| Females (n, %) | 4 (19) |
| Body mass index (kg/m2) | 23.7 ± 3.7 |
| Smokers (n, %) | 10 (48) |
| Alcohol (n, %) | 7 (33) |
| Diabetes (n, %) | 2 (10) |
| Location of tumor (n, %) | |
| Upper thoracic esophagus | 1 (5) |
| Middle thoracic esophagus | 5 (24) |
| Lower thoracic esophagus | 14 (66) |
| Unknown | 1 (5) |
| Tumor type (n, %) | |
| Squamous cell carcinoma | 13 (62) |
| Adenocarcinoma | 6 (28) |
| Unknown | 2 (10) |
Continuous data are presented as mean ± standard deviation
