Table 1.
Patient and Esophageal Cancer Characteristics
| Characteristic | na | No. (%) or Mean ± SD |
|---|---|---|
| Age (y) | 5,664 | 63 ± 11 |
| Male | 5,672 | 4,392 (77) |
| Race | 4,063 | |
| White | 2,834 (70) | |
| Asian | 1,171 (28) | |
| Other | 58 (2.0) | |
| East (part of world) | 5,673 | 1,171 (21) |
| Location of cancer | 4,602 | |
| Upper third | 209 (5.0) | |
| Middle third | 1,209 (26) | |
| Lower third | 3,184 (69) | |
| Cancer length (cm) | 3,150 | 3.5 ± 2.6 |
| pT | 5,673 | |
| is | 370 (7.0) | |
| 1 | 1,393 (25) | |
| 2 | 932 (16) | |
| 3 | 2,787 (49) | |
| 4 | 191 (3.0) | |
| pN | 5,639 | |
| 0 | 3,199 (57) | |
| + | 2,440 (43) | |
| Number of regional lymph nodes | 5,238 | |
| N0 | 3,199 (61) | |
| N1 | 952 (18) | |
| N2 | 634 (12) | |
| N3 | 453 (9.0) | |
| Number of regional lymph nodes resected | 4,250 | |
| 0 | 438 (10) | |
| 1–5 | 1,019 (24) | |
| 6–10 | 625 (15) | |
| 11–15 | 492 (12) | |
| 16–25 | 774 (18) | |
| ≥26 | 902 (21) | |
| pM | 5,673 | |
| 0 | 5,258 (93) | |
| 1 | 415 (7.0) | |
| G (histologic grade) | 4,202 | |
| G1 (well differentiated) | 1,422 (34) | |
| G2 (moderately differentiated) | 1,349 (32) | |
| G3 (poorly differentiated) | 1,425 (34) | |
| G4 (undifferentiated) | 6 (<1) | |
| Histopathologic cell type | 5,673 | |
| Squamous cell carcinoma | 2,154 (38) | |
| Adenocarcinoma | 3,519 (62) | |
| Resection margins | 5,194 | |
| R0 | 4,605 (89) | |
| R1 | 464 (9.0) | |
| R2 | 1,256 (2.0) | |
| Year of esophagectomy | 5,806 | |
| 1970s | 78 (1.3) | |
| 1980s | 1,265 (22) | |
| 1990s | 2,303 (40) | |
| 2000s | 2,160 (37) |
a
Patients with data available.
Key: SD, standard deviation.