Can DCIS be HER2 positive?
Background. Previous studies have reported up to 50% of ductal carcinoma in situ (DCIS), is HER2 positive, but the frequency of HER2-positive invasive breast cancer (IBC) is lower. The aim of this study is to characterise HER2 status in DCIS and assess its prognostic value.
Do you need tamoxifen after mastectomy for DCIS?
Do I still need to take tamoxifen? Since your ductal carcinoma in situ (DCIS) was treated with a mastectomy, tamoxifen wouldn’t be used to reduce your chance of a local recurrence. Rather, it would be used to reduce your risk of developing a breast cancer in the opposite breast—in other words, for risk reduction.
What is the current best treatment for ductal carcinoma in situ 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)
Can high grade DCIS come back after mastectomy?
Recurrence is rare following mastectomy for DCIS. Nevertheless, there remains a need to follow patients for in-breast, nodal, or contralateral breast events, which can occur long after the index DCIS has been treated.
When is mastectomy recommended for DCIS?
Mastectomy involves removal of the whole breast and is usually recommended if the DCIS affects a large area of the breast, if it has not been possible to get a clear area of normal tissue around the DCIS by wide local excision, or if there is more than one area of DCIS.
Should I get a double mastectomy for DCIS?
If the DCIS is large, a mastectomy may be recommended. Removing the opposite breast usually isn’t recommended; chemotherapy usually isn’t recommended either. Hormonal therapy may be recommended if the DCIS is hormone-receptor-positive. DCIS is NOT invasive cancer.
Can DCIS spread after mastectomy?
Rarely, patients with ductal carcinoma in situ (DCIS) developed distant breast cancer metastasis after mastectomy, the proportion has been reported to be far less than 1% [1, 2]. Even rare are patients with DCIS developing distant metastasis (DM) without preceding invasive locoregional or contralateral recurrence.
Is chemo necessary for HER2-negative?
Hormonal therapy is considered the standard initial treatment for HER2-negative metastatic breast cancer that is also hormone receptor-positive, and is often given in combination with targeted therapy. However, chemotherapy may also be given. A clinical trial may also be an option for treatment at any stage.
Is double mastectomy necessary for DCIS?
“Our research provides important data for treatment decision-making,” she stated. “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.”
