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How many women with breast cancer have tumors that contain hormone receptors?

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About two-thirds of women with breast cancer have tumors that contain hormone receptors. This means a tumor has receptors for the hormone estrogen (called ER-positive) or the hormone progesterone (PR-positive) or both. Hormone therapy is given to block these hormones and fight the cancer's growth. Women who are ER-positive are more likely to respond to hormone treatment than women who are ER-negative.

From: Hormone Therapy for Breast Cancer WebMD Medical Reference

SOURCES:

National Cancer Institute.

Breastcancer.org.

Medscape. 

Pfizer Inc.

Reviewed by Laura J. Martin on July 18, 2019

SOURCES:

National Cancer Institute.

Breastcancer.org.

Medscape. 

Pfizer Inc.

Reviewed by Laura J. Martin on July 18, 2019

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