Breast Cancer Types

Breast cancer is the most common type of cancer among women both in the world and in Brazil, after non-melanoma skin cancer.

In Brazil, 59,700 new cases of breast cancer are estimated for each year of 2018-2019, with an estimated risk of 56.33 cases per 100,000 women.

What are the most common types of breast cancer?

Ductal carcinoma in situ;
Invasive carcinoma (former invasive ductal carcinoma);
Invasivelobular carcinoma.

It is noteworthy that some evolve faster, while others evolve slowly.

In situ ductal carcinoma or Intraductal carcinoma

This cancer can be classified as "noninvasive" or "pre invasive". Most women who are diagnosed with ductal carcinoma in situ can achieve a cure as long as they are treated correctly and as soon as they discover the disease.

Invasive carcinoma (former invasive ductal carcinoma)

It is the most common category of breast cancer, and starts in a breast duct.

Invasive lobular carcinoma

It starts in the glands that are responsible for milk production. This type of cancer is the most difficult to diagnose during mammography.

What are the least common types of breast cancer?

Inflammatory breast cancer;
Paget's disease;
Phyllodes tumor;

Inflammatory breast cancer

It is one of the rarest types of breast cancer. It affects about 1 to 5% of diagnosed cases of the disease.

Paget’s Disease

This disease begins in the breast ducts and spreads to the skin of the nipple until it reaches the areola (the rounder, darker part around the nipple). It is very rare, being in about 1% to 3% of registered cases.

Phyllodes tumor

It is a rare breast tumor, and may be benign or malignant. It starts in the connective tissue of the breast (the stroma), unlike carcinomas, which develop in the ducts.


It is the rarest type of cancer, less than 1% of all diagnosed cancer cases. It begins in the cells lining the blood or lymphatic vessels. It can involve breast tissue or breast skin, but rarely occurs in the breast.

That is why one of our pillars is to bring the possibility of early diagnosis for low-income women who do not have access to mammography.

When breast cancer is detected early, the chances
of cure of the disease are up to 95%.