Table 1 Patient characteristics
From: Impact of age at diagnosis of head and neck cancer on incidence of metachronous cancer
All cases, n | 1953 |
|---|---|
Gender, male/female, n | 1588/365 |
Age, median (range), year | 65 (12–97) |
  ≥ 65, n | 983 |
  < 65, n | 970 |
Lesion location | |
 Oral cavity, n (%) | 514 (26) |
 Oropharynx, n (%) | 300 (15) |
 Hypopharynx, n (%) | 541 (28) |
 Larynx, n (%) | 598 (31) |
Histological type | |
 Squamous cell carcinoma, n (%) | 1863 (95.4) |
 Malignant lymphoma, n (%) | 28 (1.4) |
 Basaloid squamous cell carcinoma, n (%) | 9 (0.4) |
 Verrucous carcinoma, n (%) | 8 (0.4) |
 Adenoid cystic carcinoma, n (%) | 7 (0.4) |
 Malignant melanoma, n (%) | 5 (0.3) |
 Neuroendocrine carcinoma, n (%) | 4 (0.2) |
 Papillary squamous cell carcinoma, n (%) | 3 (0.2) |
 Mucoepidermoid carcinoma, n (%) | 3 (0.2) |
 Others, n (%) | 14 (0.7) |
 Unknown, n (%) | 9 (0.4) |