Table 4.
Histologic type of biopsy specimens
| Histologic types | Endoscopic treatment | Surgery | Chemotherapy and/or radiotherapy (%) | Total (%) | |
|---|---|---|---|---|---|
| (%) | Esophagectomy (%) | Palliative surgery (%) | |||
| Squamous cell carcinoma | 1101 (77.5%) | 4291 (87.4%) | 116 (90.6%) | 3733 (91.9%) | 6911 (86.2%) |
| Squamous cell carcinoma | 867 (61.0%) | 2442 (49.7%) | 74 (57.8%) | 2330 (57.4%) | 4377 (54.6%) |
| Well differentiated | 100 (7.0%) | 387 (7.9%) | 9 (7.0%) | 259 (6.4%) | 565 (7.0%) |
| Moderately differentiated | 117 (8.2%) | 1093 (22.3%) | 24 (18.8%) | 805 (19.8%) | 1448 (18.1%) |
| Poorly differentiated | 17 (1.2%) | 369 (7.5%) | 9 (7.0%) | 339 (8.3%) | 521 (6.5%) |
| Adenocarcinoma | 38 (2.7%) | 340 (6.9%) | 4 (3.1%) | 133 (3.3%) | 419 (5.2%) |
| Barrett's carcinoma | 33 (2.3%) | 91 (1.9%) | 1 (0.8%) | 25 (0.6%) | 133 (1.7%) |
| Adenosquamous carcinoma | 2 (0.1%) | 11 (0.2%) | 4 (0.1%) | 14 (0.2%) | |
| Mucoepidermoid carcinoma | 1 (0.0%) | 1 (0.0%) | |||
| Basaloid carcinoma | 2 (0.1%) | 31 (0.6%) | 16 (0.4%) | 39 (0.5%) | |
| Neuroendocrine tumor | 1 (0.0%) | 1 (0.0%) | 2 (0.0%) | ||
| Neuroendocrine carcinoma | 4 (0.3%) | 21 (0.4%) | 27 (0.7%) | 34 (0.4%) | |
| Undifferentiated carcinoma | 6 (0.1%) | 4 (0.1%) | 9 (0.1%) | ||
| Malignant melanoma | 15 (0.3%) | 6 (0.1%) | 19 (0.2%) | ||
| Carcinosarcoma | 16 (0.3%) | 1 (0.8%) | 8 (0.2%) | 19 (0.2%) | |
| GIST | 1 (0.0%) | 1 (0.0%) | |||
| Adenoid cystic carcinoma | 1 (0.0%) | 1 (0.0%) | |||
| Nonepithelial tumors | 2 (0.1%) | 3 (0.0%) | |||
| Other epithelial tumors | 17 (1.2%) | 4 (0.1%) | 8 (0.2%) | 27 (0.3%) | |
| Other tumors | 51 (3.6%) | 16 (0.3%) | 13 (0.3%) | 79 (1.0%) | |
| Unknown | 171 (12.0%) | 64 (1.3%) | 6 (4.7%) | 84 (2.1%) | 308 (3.8%) |
| Total | 1421 | 4910 | 128 | 4062 | 8019 |