invasive ductal carcinoma
Most common type of breast cancer that begins in milk ducts and spreads to surrounding breast tissue.
Full Definition
Invasive ductal carcinoma (IDC) is the most prevalent form of breast cancer, accounting for approximately 80% of all invasive breast cancers. This cancer type originates in the cells lining the milk ducts and then breaks through the duct walls to invade surrounding breast tissue. From there, it has the potential to spread to lymph nodes and other parts of the body. IDC can occur at any age but is most common in women over 55. The cancer typically appears as a hard, irregular mass on imaging and physical examination.
Usage
Usage note: IDC is acceptable abbreviation in clinical contexts.
In Context
- "Pathology confirmed invasive ductal carcinoma, grade 2, measuring 1.8 cm." — Pathology report
- "IDC represents the majority of breast cancer diagnoses." — Patient education material