Table 2.

Incidence of Common Cancers as First Primary Cancer and Second Primary Cancer, and Respective Relative Risk (RR) in Women

First Primary Cancer				Second Primary Cancer After Invasive SCC
Cancer	Number of Cases	Standardized Rate 1/100,000	Rank1	Number of Cases	Standardized Rate 2/100,000	Rank2	RR	95% CI
Breast	143,819	83.6	1	529	103.7	1	1.24	1.14	1.35
Colorectum	56,198	24	2	354	30.0	3	1.25	1.13	1.39
Lung	31,306	16.4	3	136	22.1	4	1.35	1.14	1.60
Melanoma	23,800	15.2	4	181	39.7	2	2.61	2.25	3.02
Endometrium	28,548	14.7	5	134	19.0	5	1.29	1.09	1.53
Nervous system	16,042	11.5	6	19	7.5	10	0.65	0.41	1.02
Ovary	18,523	11	7	68	15.4	7	1.40	1.10	1.77
Leukemia	13,833	7.9	8	95	13.4	9	1.69	1.38	2.07
Cervix	11,053	7.7	9	19	7.4	11	0.96	0.61	1.51
NHL	15,152	7.6	10	132	15.9	6	2.09	1.76	2.48
Endocrine	11,393	7.2	11	20	5.5	14	0.77	0.49	1.19
Bladder	12,134	5.2	12	83	6.9	12	1.33	1.07	1.65
Kidney	9520	5	13	32	5.0	15	0.99	0.70	1.40
Liver	10,939	4.8	14	52	5.7	13	1.18	0.90	1.55
Thyroid	5758	4.1	15	9	3.3	19	0.81	0.42	1.57
Stomach	8889	3.7	16	50	4.5	16	1.22	0.92	1.61
UAT	6932	3.7	17	105	13.6	8	3.68	3.03	4.47
Myeloma	5898	2.6	18	27	2.6	21	1.00	0.69	1.47
Female genital	4450	1.9	19	44	3.5	18	1.86	1.38	2.51
Connective tissue	2903	1.8	20	17	3.2	20	1.76	1.09	2.84
Hodgkin lymphoma	1934	1.7	21	6	3.7	17	2.20	0.98	4.93
Small intestine	2112	1	22	7	0.8	22	0.83	0.39	1.74
All*	481,702	237.7	–	2371	325.6	–	1.37	1.32	1.43

Notes: *Skin cancer is removed from all cancers; some rare cancers, not listed in Table 2 are included. Bolding shows RRs>2.00.

Abbreviations: SCC, squamous cell carcinoma; NHL, non-Hodgkin lymphoma; UAT, upper aerodigestive tract.