A non-invasive malignant proliferation confined to breast ducts.
What it means
A non-invasive malignant proliferation confined to breast ducts.
Clinical context
DCIS is commonly used in Breast pathology, Oncology. The exact meaning can depend on specialty, region and local documentation practice.
Learning note
Use the full term when clarity matters, especially in formal assignments, prescriptions, handover and patient-facing communication.