Types of Breast Cancer
Ductal Carcinoma In Situ (DCIS)
DCIS is a non-invasive form of breast cancer where abnormal cells are
found in the lining of a breast duct but have not spread outside the
duct. It is considered the earliest form of breast cancer and is highly
treatable.
Invasive Ductal Carcinoma (IDC)
This is the most common type of breast cancer. It begins in the milk
ducts and invades surrounding breast tissue. IDC accounts for about 80%
of all invasive breast cancers.
Invasive Lobular Carcinoma (ILC)
ILC starts in the milk-producing lobules and spreads to nearby tissues.
It is the second most common type of invasive breast cancer, known for
its tendency to be more difficult to detect on mammograms.
Triple-Negative Breast Cancer
This aggressive form of breast cancer lacks estrogen, progesterone, and
HER2 receptors, making it harder to treat with standard hormone
therapies or HER2-targeted drugs.
HER2-Positive Breast Cancer
Characterized by an overexpression of the HER2 protein, this type grows
and spreads faster than other breast cancers but often responds well to
targeted therapies like trastuzumab (Herceptin).
Inflammatory Breast Cancer
A rare and aggressive form that blocks lymph vessels in the skin of the
breast, causing redness, swelling, and a warm sensation. It progresses
rapidly and requires urgent treatment.