BACKGROUND Whether sentinel lymph node biopsy (SLNB) should be performed in patients with pure ductal carcinoma in situ (DCIS) of the breast has been a question of debate over the last decade. The aim of this study was to identify factors associated with microinvasive disease and determine the criteria for performing SLNB in patients with DCIS. MATERIALS AND METHODS 125 patients with DCIS who...

The type 1 tyrosine kinase receptor HER2 (c-erbB2/neu) is associated with resistance to hormone therapy and poor survival in invasive breast cancer, whereas HER4 expression is associated with endocrine responsiveness. Patterns of tyrosine kinase receptor coexpression may aid prediction of recurrence risk after surgery for ductal carcinoma in situ (DCIS). Women who had undergone surgery for pure...

PURPOSE The risk of recurrence and progression of ductal carcinoma in situ (DCIS) of the breast is best designated by morphological indicators, including the presence of necrosis. Our purpose was to identify molecular alterations underlying progression of DCIS. EXPERIMENTAL DESIGN We have compared gene expression within a cohort of six cases of DCIS with necrosis (DCIS(necrosis+)) and four ca...

PURPOSE Human invasive breast cancers (IBC) show enormous histologic and biological diversity. This study comprehensively evaluated diversity in ductal carcinoma in situ (DCIS), the immediate precursors of IBCs. EXPERIMENTAL DESIGN The extent of diversity for conventional histologic grade and standard prognostic biomarkers assessed by immunohistochemistry was evaluated in a series of pure DCI...

Abstract: Ductal carcinoma in-situ DCIS is a heterogeneous entity in breast neoplasm with unpredictable biological behavior. This poses challenge in the management of DCIS. Various trials on DCIS have shown good outcome with integral treatment of adequate surgery, radiotherapy and hormonal therapy. Identification of subgroup of DCIS for radiotherapy and hormonal therapy could improve recurrence...

Abstract Despite increasing evidence supporting the clinical relevance of tumour infiltrating lymphocytes (TILs) in invasive breast cancer, TIL spatial variability within ductal carcinoma situ (DCIS) samples and its association with progression are not well understood. To characterise tissue architecture microenvironment DCIS, we designed validated a new deep learning pipeline, UNMaSk. Followin...

Corresponding to the increased use of mammography, the incidence of ductal carcinoma in situ (DCIS) has risen dramatically in the past 30 years. Despite its growing incidence, the treatment of DCIS remains highly variable and controversial. Although DCIS itself does not metastasize and is never lethal, it may be a precursor of invasive breast cancer and is a marker of increased breast cancer ri...

BACKGROUND Molecular phenotypes of invasive breast cancer predict early recurrence. Ductal carcinoma in situ (DCIS) exhibits similar phenotypes, but their frequency and significance remain unclear. To determine whether DCIS molecular phenotypes predict recurrence, 314 women (median age 57.7 years) with primary DCIS who were screened or entered DCIS trials in a specialist breast unit from 1990 t...

PURPOSE In the quest for new targets, genomes of ductal carcinoma in situ (DCIS) and infiltrating duct carcinoma (IDC) have been compared previously; however, genomic alterations associated with cancer progression were difficult to identify. We hypothesized that significant events can be detected by comparing lesions with a broader range of behavior: from pure DCIS to IDC associated with lymph ...

The purpose of this study was to evaluate the role of high-resolution magic angle spinning (HR-MAS) 1H nuclear magnetic resonance (NMR) spectroscopy in patients with ductal carcinoma in situ (DCIS) diagnosed on preoperative biopsy. We investigated whether the metabolic profiling of tissue samples using HR-MAS 1H NMR spectroscopy could be used to distinguish between DCIS lesions with or without ...