Table 2.
Clinical characteristics of esophageal cancer samples
| Stratification | Patients, n (%) | Stratification | Patients, n (%) | ||
|---|---|---|---|---|---|
| Age, years | ≤55 | 53 (32.7) | Grade | G1 | 18 (11.1) |
| >55 | 109 (67.3) | G2 | 64 (39.5) | ||
| Sex | Female | 23 (14.2) | G3 | 44 (27.2) | |
| Male | 139 (85.8) | Gx | 36 (22.2) | ||
| Body-mass index | <18.5 | 8 (4.9) | Sample procurement | Endoscopic biopsy | 101 (62.3) |
| 18.5–24.9 | 76 (46.9) | Surgical resection | 57 (35.2) | ||
| ≥25 | 67 (42.1) | Unknown | 4 (2.5) | ||
| Unknown | 11 (6.8) | Histology | Adenocarcinoma | 78 (48.1) | |
| Race | Asian | 38 (23.5) | Squamous carcinoma | 84 (51.9) | |
| Black | 8 (4.9) | Pathologic tumor | pT1 | 28 (17.3) | |
| White | 98 (60.5) | pT2 | 37 (22.8) | ||
| Unknown | 18 (11.1) | pT3 | 77 (47.5) | ||
| Smoking, pack-years | 1–25 | 37 (22.8) | pT4 | 4 (2.5) | |
| 25–50 | 36 (22.2) | Unknown | 16 (9.9) | ||
| 50–75 | 10 (6.2) | Pathologic nodes | pN0 | 65 (40.1) | |
| 75–100 | 4 (2.5) | pN1 | 65 (40.1) | ||
| Unknown | 75 (46.3) | pN2 | 9 (5.6) | ||
| Reflux history | Yes | 51 (31.5) | pN3 | 6 (3.7) | |
| No | 86 (53.1) | Unknown | 17 (10.5) | ||
| Unknown | 25 (15.4) | Pathologic metastasis | pM0 | 122 (75.3) | |
| Reason of initial diagnosis | Screening | 8 (4.9) | pM1 | 8 (4.9) | |
| Surveillance | 2 (1.2) | Unknown | 32 (19.8) | ||
| Symptomatic | 126 (77.8) | Radiation | Yes | 19 (11.7) | |
| Unknown | 26 (16.0) | No | 113 (70.6) | ||
| Barrett history | Yes | 24 (14.8) | Unknown | 30 (18.5) | |
| No | 108 (66.7) | Chemotherapy | Yes | 18 (11.1) | |
| Unknown | 30 (18.5) | No | 114 (70.4) | ||
| Tumor location | Distal | 111 (68.5) | Unknown | 30 (18.5) | |
| Mid | 44 (27.2) | ||||
| Proximal | 6 (3.7) | ||||
| Unknown | 1 (0.6) |