Research Article
Risk Factors for Esophageal Squamous Cell Carcinoma in Patients with Head and Neck Squamous Cell Carcinoma
Table 1
Characteristics of ESCC cases in HNSCC patients.
| | | ESCC cases (n = 32), N (%) |
| | Interval time (months) | | | ≤6 months | 8 (25) | | 6 months–3 years | 13 (40.6) | | 3–6 years | 9 (28.1) | | >6 years | 2 (6.3) |
| | ESCC location | | | Neck | 3 (9.4) | | Upper thoracic | 9 (28.1) | | Middle thoracic | 13 (40.6) | | Lower thoracic | 7 (21.9) |
| | ESCC stage | | | Early | 5 (15.6) | | Developed | 27 (84.4) |
| | Endoscopic morphology | | | Early | | | 0-Is | 1 (3.1) | | 0-IIb | 4 (12.5) | | Developed | | | Mass type | 7 (21.9) | | Mass infiltration type | 10 (31.3) | | Ulcer type | 1 (3.1) | | Ulcer infiltration type | 6 (18.8) | | Peripheral constriction type | 3 (9.4) |
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