Inflammatory breast cancer: In this type of cancer cancer cells infiltrate lymphatic vessels and skin. The breast becomes reddish and hot and can become larger, firm, tender or itchy. In its early stages, inflammatory breast cancer is often confused with mastitis or infection in the breast and treated with antibiotics. If the symptoms are caused by cancer, they will not be relieved. It accounts for approximately 1 to 3% of all breast cancers.
Paget’s disease of the nipple or Paget’s disease mammary: is a rare type of cancer that affects the skin of the nipple and the areola that present eczema, crusts, scales and, sometimes, areas of bleeding or suppuration. Paget’s disease is almost always associated with ductal carcinoma in situ or infiltrating ductal carcinoma. The prognosis and treatment of the disease depend on the type of tumor to which it is associated. It represents approximately 1% of all breast cancers.
Phyloid tumor or filoid cistosarcoma: This type of tumor in the breast is rare and is formed in the breast tissue, unlike the carcinomas that form in the ducts or lobules. They tend to grow rapidly, but they rarely spread outside the breast. Most phyloid tumors are benign (noncancerous), some are malignant (cancerous) and some ambiguous. They account for less than 1% of all breast tumors.
Marrow carcinoma of the breast: This type of cancer is a rare subtype of invasive ductal carcinoma. It does not grow rapidly and usually does not extend outside the breast to the lymph nodes. It most often affects women who have a BRCA1 gene mutation.
Colloid carcinoma or mucinous carcinoma of the breast: a rare form of invasive ductal carcinoma. This type of cancer is formed from cancerous cells that produce mucus in the breast ducts.
Tubular carcinoma of the breast: a rare subtype of invasive ductal carcinoma. In this type of cancer, it is generally low grade and slow growing. The low-grade concept in a tumor refers to the fact that cancer cells look similar to normal healthy cells and tend to grow slowly.