TABLE 1.
Risk of second primary cancers on the concordant sites after the first year of first cancer diagnosis in men and women
| Cancer site | Men | Women | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| N1 | N2 | RR | 95% CI | N1 | N2 | RR | 95% CI | |||
| Lip | 2010 | 36 | 32.4 | 23.2 | 45.2 | 1045 | 14 | 61.2 | 36.1 | 104.0 |
| Tongue and mouth | 4386 | 100 | 51.7 | 42.4 | 63.1 | 3398 | 127 | 100.8 | 84.3 | 120.4 |
| Salivary | 1051 | 0 | 0 | 0 | 1006 | 0 | 0 | 0 | ||
| Anus | 803 | 3 | 37.5 | 12.0 | 116.5 | 1819 | 4 | 9.3 | 3.5 | 24.9 |
| Nose | 831 | 5 | 59.3 | 24.6 | 142.9 | 573 | 6 | 150.6 | 67.3 | 337.1 |
| Liver | 10 990 | 20 | 4.3 | 2.8 | 6.7 | 10 939 | 12 | 2.8 | 1.6 | 4.8 |
| Breast | — | — | — | — | 143 819 | 5759 | 1.8 | 1.8 | 1.9 | |
| Female genital | — | — | — | — | 4450 | 47 | 17.4 | 13.1 | 23.3 | |
| Prostate | 185 081 | 106 | 0.01 | 0.01 | 0.01 | 1045 | — | — | — | — |
| Kidney | 13 922 | 68 | 2.9 | 2.3 | 3.7 | 9520 | 64 | 5.8 | 4.6 | 7.5 |
| SCC of the skin | 28 324 | 3626 | 13.2 | 12.7 | 13.6 | 23 032 | 2136 | 13.7 | 13.1 | 14.3 |
| Thyroid | 2213 | 4 | 8.4 | 3.2 | 22.5 | 5758 | 8 | 2.5 | 1.2 | 5.0 |
| Connective tissue | 3564 | 11 | 8.5 | 4.7 | 15.4 | 2903 | 14 | 19.7 | 11.6 | 33.3 |
| NHL | 18 414 | 78 | 2.00 | 1.6 | 2.5 | 15 152 | 55 | 2.0 | 1. 6 | 2.6 |
| CLL | 5828 | 3 | 0.5 | 0.2 | 1.5 | 3844 | 5 | 1.9 | 0. 8 | 4.5 |
Abbreviations: CLL, chronic lymphocytic leukemia; N1, number of first primary cancer; N2, number of second primary cancer; NHL, non‐Hodgkin lymphoma; SCC, squamous cell carcinoma.