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Lifetime risk of developing invasive breast cancer

• 1 in 8 [ACS, 2011-2012]
• Risk in 1975: 1 in 11

By Age

Probability of developing breast cancer in the next 10 years

as a % as 1 in xx number
20 .06% 1 in 1681
30 .43 1 in 232
40 1.45 1 in 69
50 2.38 1 in 42
60 3.45 1 in 29
70 3.74 1 in 27
Lifetime Risk 12.15 1 in 8

 


Risk factors

• Age (95% diagnosed after age 40; median age at diagnosis is 61)


• Being female (99% of cases are female; 1% male)


• BRCA gene mutations (1% of the female population)


• 60% lifetime risk of getting breast cancer


• 15-40% risk of getting ovarian cancer (compared to 1.4% risk in general
population)


• Ashkenazi Jews (originally from Eastern Europe):higher risk


o 10 times more likely to have BRCA mutation (2.6% vs .2% for general population)
o But, only 7% of BC in Ashkenazi Jews is caused by BRCA mutations

• Family history - first degree relative (10% of all bc)


• Exposure to radiation at early age


• DCIS or other cancers


• Dense breasts


For broader discussion of risks, click HERE

 


 

 

 

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