Triple negative (TN) breast cancer is defined as cancer with negative expressions of hormone receptors and human epidermal growth factor receptor 2 (HER2). This subtype is characterized as a cancer with a high malignancy potential and a poor prognosis. Endocrine therapy and anti-HER2 therapy are ineffective in the treatment of TN breast cancer as they have less specific targets compared with ot...

We have retrospectively analyzed a series of 155 sequential cases of T1N0M0 ductal carcinomas of which 51 tumors had a ductal carcinoma in situ (DCIS) component for correlation between the presence of DCIS and clinicopathological variables, recurrence and patient survival. No correlations between the presence of DCIS and age, menopausal status, size, estrogen or progesterone receptors were foun...

Ductal carcinoma in situ (DCIS) is the fastest growing subtype of breast cancer, mainly because of the aging of our populations and improvements in diagnostic mammography and core biopsy. DCIS represents a proliferation of malignant-appearing cells that have not invaded beyond the ductal basement membrane and is a precursor for the development of invasive breast cancer (IBC). Approximately 40% ...

Stromal-derived hepatocyte growth factor (HGF) acting through its specific proto-oncogene receptor c-Met has been suggested to play a paracrine role in the regulation of tumor cell migration and invasion. The transition from preinvasive ductal carcinoma in situ (DCIS) to invasive breast carcinoma is marked by infiltration of stromal fibroblasts and the loss of basement membrane. We hypothesized...

The clinical implications of HER-2/neu (HER2) expression in ductal carcinoma in situ (DCIS) lesions have yet to be clearly elucidated; this despite the more frequent expression of HER2 in high-grade DCIS lesions compared with invasive cancers. We hypothesized that HER2 overexpression in DCIS is associated with more rapid progression to invasive disease. Immunohistochemical staining for estrogen...

Background & Aims: This study was performed to investigate possible relationships between the manifestation of stromal cells (fibroblasts and/or myofibroblasts) by focusing on expression of their matrix metalloproteinase 9 (MMP9) and possible angiogenesis based on CD31 and CD34 antigen expression during the various steps of hyperplastic changes to precancerousstate and invasive breast cancer. M...

Widespread screening mammography programmes mean that ductal carcinoma in situ (DCIS), a pre-invasive breast lesion, is now more frequently diagnosed. However, not all diagnosed DCIS lesions progress to invasive breast cancer, which presents a dilemma for clinicians. As such, there is much interest in studying DCIS in the laboratory, in order to help understand more about its biology and determ...

The heterogeneity among multiple ductal carcinoma in situ (DCIS) lesions within the same patient also diagnosed with invasive ductal carcinoma (IDC) has not been well evaluated, leaving research implications of intra-individual DCIS heterogeneity yet to be explored. In this study formalin-fixed paraffin embedded sections from 36 patients concurrently diagnosed with DCIS and IDC were evaluated b...

Background and Purpose : The pattern and distribution of p63 expression as a myoepithelial/basal stem cell marker can be different between atypical ductal hyperplasia (ADH), ductal carcinoma in situ (DCIS) and invasive ductal carcinoma (IDC) and may denote basal phenotype of breast ductal carcinoma. CK8/18 is a luminal marker and may indicate a luminal phenotype of IDC and its expression in ADH...

HYPOTHESIS A core needle biopsy (CNB) diagnosis of ductal carcinoma in situ (DCIS) may be associated with a final diagnosis of invasive cancer. Preoperative radiologic, clinical, and pathological features may identify patients at high risk of diagnostic upstaging, who may be appropriate candidates for sentinel node biopsy at initial surgery. DESIGN Review of prospectively collected database. ...