Ductal Carcinoma in Situ (DCIS) News and Research

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Ductal Carcinoma in Situ (DCIS) is a condition where the cells lining the milk ducts (the channels in the breast that carry milk to the nipple) are cancerous, but stay contained within the ducts without growing through into the surrounding breast tissue. DCIS may affect just one area of the breast, but can be more widespread and affect different areas at the same time. Sometimes DCIS may be described as pre-cancerous, pre-invasive, non-invasive, or intraductal cancer.

Public-health efforts to increase the use of breast-cancer screening appear to have altered the types of breast cancer being diagnosed

Since 1980, the incidence of ductal carcinoma in situ, or DCIS, one of the most common kinds of early stage breast cancer, has increased more than sevenfold. This sharp increase in DCIS – which is a tumor that contains cancer-like cells but is not considered "true" cancer because the cells have not invaded normal breast tissue – has been accompanied by a flattening in the incidence of true invasive breast cancer.

11 Apr 2005

Women with non–invasive breast cancer carry the same mutations in two inherited breast/ovarian cancer genes as women diagnosed with invasive breast cancer

The inherited breast/ovarian cancer genes are BRCA1 and BRCA2, which are associated with an increased risk of breast and/or ovarian cancer. The results are part of a five–year study of a common form of early stage breast cancer called ductal carcinoma in situ (DCIS).

7 Mar 2005

Non-invasive and invasive breast cancers share the same genetic mutations

Women diagnosed with early stage, non–invasive breast cancer who carry the same mutations in two inherited breast/ovarian cancer genes as women diagnosed with invasive breast cancer, may benefit from high risk treatment, Yale researchers report in the February 23 issue of Journal of the American Medical Association.

23 Feb 2005

Breast MRI moderately useful for detecting breast cancer

In women with breast lesions that are suspicious for cancer, based on clinical examination or mammography, performing a breast MRI has high sensitivity but only moderate specificity for detecting breast cancer, but does not necessarily eliminate the need for tissue sampling, according to a study in the December 8 issue of JAMA.

8 Dec 2004

Advances in biomedical imaging could lead to more sensitive screening tests for cancer-fighting drugs

Advances in biomedical imaging are allowing UC Davis researchers to use mice more effectively to study cancers comparable to human disease. The system can distinguish different stages of cancer and could lead to more sensitive screening tests for cancer-fighting drugs.

9 Aug 2004

Chemotherapy aimed at both cancer cells and their genetically normal cellular 'microenvironment' might improve the success of breast cancer treatment

In the first comprehensive survey of gene activity in each cell type composing normal and malignant breast tissue, scientists at Dana-Farber Cancer Institute have identified genes in non-cancerous supporting cells that can spur the growth of breast cancer cells.

20 Jul 2004

Clinical trial of 5 day treatment for earliest form of breast cancer

Researchers at Virginia Commonwealth University’s Massey Cancer Center have begun a clinical trial testing the effectiveness of an established balloon catheter radiation delivery device on the earliest form of breast cancer, ductal carcinoma in situ.

27 May 2004

Improvements needed in breast cancer treatment

Treatment of ductal carcinoma in situ (DCIS), a group of abnormal cells confined to the breast ducts, varies widely in the United States. Treatment ranges from potential over-treatment with aggressive surgical therapy to possible under-treatment by not providing radiation.

22 Mar 2004