- Invasive lobular carcinoma made up 11% of U.S. breast cancers (2017–2021).
- Incidence increased nearly 3% per year across all racial and ethnic groups.
- Most patients were aged 65 years or older at diagnosis.
- Tumors were usually HR-positive and HER2-negative, often larger at detection.
- Ten-year survival was lower for regional and distant disease.
- “ILC has unique characteristics that can contribute to delayed detection,” said Rachel A. Giaquinto, MPH, American Cancer Society.
Source: Cancer
