DCIS
Pronunciation: D-C-I-S
Also written as: DCIS — ductal carcinoma in situ
Abbreviation for ductal carcinoma in situ, a non-invasive form of breast cancer confined to milk ducts.
Full Definition
DCIS stands for ductal carcinoma in situ, representing abnormal cells inside a milk duct that have not spread to surrounding breast tissue. Considered a non-invasive or pre-invasive condition, DCIS is sometimes called stage 0 breast cancer. While DCIS itself is not life-threatening, it can increase the risk of developing invasive breast cancer in the future. DCIS is often detected through mammography as microcalcifications and requires treatment to prevent progression to invasive cancer. Treatment options typically include lumpectomy with or without radiation therapy, or mastectomy in extensive cases.
Usage
Usage note: Always capitalize; spell out on first use in patient-facing documents.
In Context
- "The mammogram revealed suspicious microcalcifications consistent with DCIS." — Radiology report
- "DCIS is considered a precursor to invasive breast cancer." — Patient counseling note