NCCN Guidelines for Patients
Breast Cancer - Carcinoma in Situ
, Version 1.2016
Part 3 describes the care for DCIS.
DCIS is cancer that starts in the cells
that line the milk ducts of the breasts.
The cancer has not grown outside of
The health care presented in Part 3 follows a
diagnosis of DCIS. DCIS can only be diagnosed by
a pathologist using tissue that was removed from the
breast tumor with a biopsy. A pathologist is a doctor
who’s an expert in testing cells to find disease.
There is more than one type of biopsy that removes
breast tissue. You may have had a biopsy that
removed tissue samples with a needle. Such biopsies
include a fine-needle aspiration and a core needle
biopsy. An excisional biopsy is a minor surgery that
removes the whole tumor but not much else.
Following a DCIS diagnosis, other tests are needed to
plan the best treatment. Read the section
to learn more. When your test results are
back, talk with your doctor about which options
Breast cancer treatment
are best for you.
Health care following cancer treatment is explained in
23 Treatment planning
26 Breast cancer treatment
30 Risk-reduction treatment
32 Breast reconstruction
34 Follow-up care