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Breast Cancer Sub-types

Understanding which sub-type of breast cancer you have will help you understand your treatment options. In this series, we explore what a diagnosis of hormone positive, HER2+, triple negative, and DCIS/LCIS really means and how each is treated.

“Triple negative” is the term used to describe tumors that are ER-negative, PR-negative, and HER2-negative. It’s estimated that about 20% of breast tumors are triple negative.

DCIS is an acronym for ductal carcinoma in situ. DCIS is a precancer that is usually found on a mammogram. In this video, you will learn how DCIS is diagnosed and treated.

LCIS is an acronym for lobular carcinoma in situ. LCIS is typically diagnosed after a breast biopsy. It is not breast cancer, but it does increase breast cancer risk. In this video, you will learn about LCIS and how it is treated.

All breast tumors are tested to see if they are hormone sensitive. Those tumors that are hormone sensitive will typically respond to anti-estrogen treatments. In this video, you will learn about hormone-sensitive breast cancer.

Breast cancer is not just one disease. Some breast tumors are HER2-positive. In this video you will learn about how tumors are tested to see if they are HER2-positive and about treatments available for women whose tumors are HER2-positive.