Types of breast cancer include ductal carcinoma in situ, invasive ductal carcinoma, inflammatory breast cancer, and metastatic breast cancer.
What type of breast cancer is most common?
Invasive ductal carcinoma (IDC), also known as infiltrating ductal carcinoma, is cancer that began growing in a milk duct and has invaded the fibrous or fatty tissue of the breast outside of the duct. IDC is the most common form of breast cancer, representing 80 percent of all breast cancer diagnoses.
What is the least aggressive form of breast cancer?
Luminal A — the least aggressive and most common subtype — accounts for 42% to 59% of all breast cancers, according to background information in the study. Luminal B typically occurs in younger women and accounts for about 10% of all breast cancers.
Where is most breast cancer located?
Several studies have found that the upper outer quadrant of the breast is the most frequent site for breast cancer occurrence.