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What are the symptoms of HER2-positive breast cancer?

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Symptoms may include:

  • Breast swelling
  • A change in its shape
  • Skin irritation or dimpling
  • Pain in the breast or nipple
  • Redness or thickness of the nipple or breast skin
  • Discharge from the nipple (not breast milk)

You may have noticed a difference in your breasts during a self-exam. Or you may have had a mammogram that showed a growth.

SOURCES:

UpToDate.

Breastcancer.org: "HER2 Status," "How Triple-Negative Breast Cancer Behaves and Looks,” “Inform HER2 Dual ISH Test,”  “SPoTLight HER2 CISH Test.”

Lab Tests Online: "HER-2/neu."

American Cancer Society: "How is breast cancer diagnosed?" "Treatment of invasive breast cancer, by stage,” “Understanding Your Pathology Report: Breast Cancer,” "Signs and Symptoms of Breast Cancer."

Ithimakin, S. Cancer Research, April 1, 2013.

Reviewed by Laura J. Martin on December 21, 2020

SOURCES:

UpToDate.

Breastcancer.org: "HER2 Status," "How Triple-Negative Breast Cancer Behaves and Looks,” “Inform HER2 Dual ISH Test,”  “SPoTLight HER2 CISH Test.”

Lab Tests Online: "HER-2/neu."

American Cancer Society: "How is breast cancer diagnosed?" "Treatment of invasive breast cancer, by stage,” “Understanding Your Pathology Report: Breast Cancer,” "Signs and Symptoms of Breast Cancer."

Ithimakin, S. Cancer Research, April 1, 2013.

Reviewed by Laura J. Martin on December 21, 2020

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How is HER2-positive breast cancer diagnosed?

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