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Table 2 Incidence of metachronous cancer after head and neck cancer by age at diagnosis of index cancer

From: Impact of age at diagnosis of head and neck cancer on incidence of metachronous cancer

  Age ≥ 65
n = 983
Age < 65
n = 970
Total
n = 1953
Esophageal cancer, n 73 117 190
Lung cancer, n 37 28 65
Other organs
 Gastric cancer, n 39 33 72
 Colorectal cancer, n 17 18 35
 Liver cancer, n 9 6 15
 Prostatic cancer, n 7 4 11
 Thyroid cancer, n 4 7 11
 Renal and ureter cancer, n 8 2 10
 Breast cancer, n 4 3 7
 Pancreatic cancer, n 3 1 4
 Uterine cancer, n 1 1 2
 Others, na 5 6 11
 Total, n 97 81 178
  1. aOthers include 3 lymphomas (1 eye socket, 2 lymph nodes, and 1 unknown region), 2 myelomas, 1 ovarian cancer, 1 cancer of the maxillary sinus, 1 duodenal cancer, and 1 cancer of unknown primary origin
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