What should you know about microinvasive DCIS?

DCIS is a non-invasive breast cancer pattern; microinvasion adds a limited invasive component. The pathology report may describe the size and number of invasive foci, tumour grade, margins, lymph-node findings, and hormone-receptor results. These details help the breast team distinguish the in-situ component from the invasive component.

A mammogram may show calcifications, while a breast biopsy examines sampled tissue. A biopsy can suggest the diagnosis, but surgery may provide more tissue to confirm the extent and whether the edges are clear.

Arrange a consultation with a breast surgeon and oncology team. Ask them to review the pathology wording, imaging, margin plan, and whether lymph-node assessment is appropriate. Treatment may include lumpectomy or mastectomy; radiotherapy and hormone therapy for cancer depend on the operation, pathology, receptors, and personal priorities.

Contact your care team promptly for a new wound problem, fever, increasing redness, heavy bleeding, worsening swelling, or uncontrolled pain after a biopsy or operation. Seek urgent help for severe breathlessness, chest pain, fainting, or sudden one-sided weakness.

Ask: How large is the invasive focus? Are the margins clear? Do I need lymph-node assessment? What do the hormone receptors show? Which treatment sequence fits my pathology and goals?