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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)