Ductal carcinoma in situ (DCIS) is a heterogeneous group of diseases that differ in biology and clinical behavior. Until 1980, DCIS represented less than 1% of all breast cancer cases. With the ...

Have you ever heard about a cancer that is "in situ"? There's a reason why it's called that -- and why it's the kind of ...

HER2 tumor marker tests are used to determine whether breast cancer is HER2 positive or negative. A person is a candidate for ...

Ductal carcinoma in situ (DCIS), also known as stage 0 breast cancer, affects more than 60,000 U.S. women each year. (iStock) ...