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Table 2 Descriptive characteristics of second primary prostate cancer cases by age at index breast cancer from the SEER 18 registries, 1988–2012

From: Descriptive characteristics of prostate cancer in patients with a history of primary male breast cancer – a SEER analysis

 

All cases (N = 250)

Age < 70 years at index breast cancer (n = 156)

Age 70+ years at index breast cancer (n = 94)

 
 

n

(%)

n

(%)

n

(%)

P value*

Age at second primary prostate cancer, years

 Mean (SD)

70.9

(8.1)

     

Race/ethnicity

 Non-Hispanic White

192

(76.8)

119

(76.3)

73

(77.7)

0.893

 Black

39

(15.6)

26

(16.7)

13

(13.8)

 

 Asian/Pacific Islander/Alaska Native

7

(2.8)

4

(2.6)

3

(3.2)

 

 Hispanic

12

(4.8)

7

(4.5)

5

(5.3)

 

Latency period to prostate cancer diagnosis, months

 Median (interquartile range)

36

(14–84)

47

(17–103)

28

(10–57)

<0.001

Prostate cancer AJCC stage

 I

2

(0.8)

1

(0.6)

1

(1.1)

0.003

 II

122

(48.8)

89

(57.1)

33

(35.1)

 

 III

12

(4.8)

10

(6.4)

2

(2.1)

 

 IV

18

(7.2)

6

(3.8)

12

(12.8)

 

 Unknown

96

 

50

 

46

  
  1. *To test for differences between groups we used Fisher’s exact test for categorical variables with cells <5 and Wilcoxon rank-sum test for medians