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NCCN Guidelines for Patients


Breast Cancer - Carcinoma in Situ

(stage 0)

, 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 ducts.

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

described in

Breast cancer treatment




, and

Breast reconstruction

are best for you.

Health care following cancer treatment is explained in

the section

Follow-up care



Treatment guide:


23 Treatment planning

26 Breast cancer treatment

30 Risk-reduction treatment

32 Breast reconstruction

34 Follow-up care

36 Review