Lobular Carcinoma Overview

What is Lobular Carcinoma In Situ?

Lobular carcinoma in situ (inside) is classified as a high-risk condition. It originates in the milk-producing lobes and is rarely thought to develop into breast cancer, however, a history of lobular carcinoma in situ may put you at a higher risk of developing breast cancer in the future.

Women with a diagnosis of lobular carcinoma in situ are referred to the High-Risk Breast Cancer Program.  

What is Invasive Lobular Carcinoma?

Invasive lobular carcinoma is characterized when the mutated cells spread from the lobules into the breast tissue.

In lobular carcinoma, lumps are uncommon and may be difficult to detect by breast exam or mammogram. You may notice thickening or fullness in the breast instead.

» See more symptoms of lobular carcinoma.

Lobular carcinoma is more likely than other types of breast cancer to occur in both breasts.

Who's at Risk for Lobular Carcinoma?

Anybody can develop lobular carcinoma, but certain factors may increase your risk, including:

• family history of breast cancer
• family history of late menopause
• hereditary diffuse gastric cancer syndrome
• hormone use after menopause
• postmenopausal status

Learn more about the High-Risk Breast Cancer Program at Magee.

Early detection is important.

Ask your doctor or nurse to teach you how to perform a breast exam on yourself. Each clinical visit should also include a breast exam.

View screening recommendations for women without symptoms or a family history of breast cancer.