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What is invasive ductal carcinoma?

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Invasive ductal carcinoma (IDC) accounts for about 80% of all invasive breast cancers in women and 90% in men.

Like ductal carcinoma in situ (DCIS), it begins in the milk ducts. But unlike DCIS, IDC is not contained. Instead, it grows through the duct walls and into the surrounding breast tissue. And it can spread to other parts of your body.

SOURCES:

Breastcancer.org: "DCIS - Ductal Carcinoma In Situ," "Invasive ductal carcinoma," “Treatment for DCIS.”

National Cancer Institute: "Ductal Carcinoma In Situ."

American Cancer Society: "What is breast cancer?"

Reviewed by Laura J. Martin on February 27, 2019

SOURCES:

Breastcancer.org: "DCIS - Ductal Carcinoma In Situ," "Invasive ductal carcinoma," “Treatment for DCIS.”

National Cancer Institute: "Ductal Carcinoma In Situ."

American Cancer Society: "What is breast cancer?"

Reviewed by Laura J. Martin on February 27, 2019

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What happens if your tests show that you have invasive ductal carcinoma?

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