1. True or false? Breast cancer is the number one cancer killer of women. 2. True or false? LCIS tends to occur at an earlier age than DCIS and is more often  bilateral (20–40%). 3. True or false?...

1. True or false? Breast cancer is the number one cancer killer of women.

2. True or false? LCIS tends to occur at an earlier age than DCIS and is more often  bilateral (20–40%).

3. True or false? Only about 25% of women with CIS who get no treatment go on to develop invasive carcinoma.