How serious is DCIS cancer? DCIS is non-invasive because it hasn’t spread beyond the milk ducts into other healthy tissue. DCIS isn’t life-threatening, but if you’re diagnosed with DCIS, you have a higher-than-average risk of developing invasive breast cancer later in life.

Is DCIS really breast cancer? The cells lining the milk ducts turn malignant (cancerous) but stay in place (in situ). DCIS is an early form of breast cancer. It is not invasive — the malignant cells do not grow through the wall of the duct or spread to lymph nodes or the blood stream. DCIS accounts for about 20% of breast cancers.

How aggressive is DCIS breast cancer? As a result, DCIS is generally not immediately life threatening. However, it is estimated that 14–53% of women diagnosed with DCIS subsequently develop invasive ductal carcinoma (IDC) if the DCIS is left untreated or inadequately treated [3]–[5].

What is the survival rate of DCIS? Although DCIS doesn’t pose any risk, it can turn invasive and spread to other tissues at any time. The five-year survival rate of ductal carcinoma in situ (DCIS), also known as stage 0 breast cancer, is over 98 percent.

How serious is DCIS cancer? – Additional Questions

Do I need a mastectomy for DCIS?

Most women with DCIS or breast cancer can choose to have breast-sparing surgery, usually followed by radiation therapy. Most women with DCIS or breast cancer can choose to have a mastectomy. You have small breasts and a large area of DCIS or cancer. You have DCIS or cancer in more than one part of your breast.

What is the best treatment for DCIS?

Radiation therapy

Treatment of DCIS has a high likelihood of success, in most instances removing the tumor and preventing any recurrence. In most people, treatment options for DCIS include: Breast-conserving surgery (lumpectomy) and radiation therapy. Breast-removing surgery (mastectomy)

How fast does DCIS progress?

It assumes that all breast carcinomas begin as DCIS and take 9 years to go from a single cell to an invasive lesion for the slowest growing lesions, 6 years for intermediate growing DCIS lesions, and 3 years for fast-growing DCIS lesions.

What is considered a large area of DCIS?

Large DCIS tumors (⩾2.5 cm) pose a particular risk of residual disease regardless of margin status, and additional adjuvant therapy may be necessary.

What is the treatment for DCIS stage 0?

Surgery is the main treatment for DCIS. Most women are offered breast-conserving surgery. If there are several areas of DCIS in the breast, doctors may do a mastectomy to make sure that all of the cancer is removed.

What percentage of DCIS is high grade?

We found that 50.9 % of all DCIS detected by mass screening are high grade, and therefore have a high risk of progression.

Does DCIS run in families?

There is also evidence from epidemiological studies that there is an inherited predisposition to DCIS. Women with DCIS have been shown to be 2.4 times (95 % CI 0.8, 7.2) more likely to have an affected mother and sister with breast cancer than controls [13].

How many radiation treatments are needed for DCIS?

A typical course of radiation treatment for DCIS involves 16 sessions given over three weeks.

Should I get a double mastectomy for DCIS?

“The findings suggest that patients and their doctors should focus on risk factors and appropriate therapy for the diseased breast, not the opposite breast, and that ipsilateral DCIS should not prompt a bilateral mastectomy.”

How long is DCIS surgery?

The procedure itself usually takes about one hour to complete. Breast cancer is not a cancer the surgeon can see (breast cancer is the same color as the breast tissue) so usually the cancer needs to be marked before surgery to help guide the surgeon.

Is DCIS likely to return in other breasts?

Patients with DCIS have a 15% chance of invasive local recurrence, Dr. Narod noted, but “preventing the invasive local recurrence has nothing to do with preventing death.

How long can you wait for DCIS surgery?

In women with a clinical diagnosis of DCIS, greater delay to surgery is associated with lower OS. Although most women with DCIS undergo surgical extirpation within 2 months of diagnosis, longer time to surgery is associated with greater risk of finding invasion and should be limited.

What stage is DCIS?

Stage 0 breast cancer, ductal carcinoma in situ (DCIS) is a non-invasive cancer where abnormal cells have been found in the lining of the breast milk duct. In Stage 0 breast cancer, the atypical cells have not spread outside of the ducts or lobules into the surrounding breast tissue.

What happens if you don’t treat DCIS?

We know that some cases of DCIS will transform into invasive cancer if not treated, but there is a large degree of uncertainty as to just how many—with estimates ranging from 20% to 50% of cases.

Is DCIS urgent?

DCIS doesn’t need to be treated urgently, so you can take time to think things over. You should ask questions or discuss anything you don’t understand with your surgeon or breast care nurse. You may find our booklet Making treatment decisions useful.

Should I worry about DCIS?

DCIS is considered a pre-cancer because sometimes it can become an invasive cancer. This means that over time, DCIS may spread out of the ducts into nearby tissue, and could metastasize. Currently, there’s no good way to predict which will become invasive cancer and which won’t.

Can you get DCIS twice?

Although mortality rates are very low, DCIS can recur and around half of recurrences are invasive cancers.