Table 6.

Association between histology of first and second cancers

First ductalFirst medullaryFirst lobularFirst otherTotal
BRCA1
    Second ductal1251935152
    Second medullary740112
    Second lobular21003
    Second other61018
    Total1402537175
BRCA2
    Second ductal5315160
    Second medullary11002
    Second lobular30003
    Second other00021
    Total5725266
  • NOTE: P value = 0.16 (Mantel-Haenszel χ2 test) for BRCA1. P value = 0.80 (Mantel-Haenszel χ2 test) for BRCA2.