نتایج جستجو برای: coexisting dcis
تعداد نتایج: 11192 فیلتر نتایج به سال:
The prevalence of ductal carcinoma in situ (DCIS) of the breast has increased substantially after the introduction of breast cancer screening programs, although the clinical effects of early DCIS detection and treatment remain unclear. The standard treatment for DCIS has involved local breast-conserving surgery (BCS) followed by radiotherapy (RT) or total mastectomy with/without endocrine thera...
Ductal carcinoma in situ (DCIS) lesions are non-invasive tumours of the breast that are thought to precede most invasive breast cancers (IBCs). As individual DCIS lesions are initiated, grow and invade (i.e. become IBC), the size distribution of the DCIS lesions present in a given human population will evolve. We derive a differential equation governing this evolution and show, for given assump...
PURPOSE Excess histone deacetylase (HDAC) activity can induce hypoacetylation of histone and nonhistone protein substrates, altering gene expression patterns and cell behavior potentially associated with malignant transformation. However, HDAC expression and protein acetylation have not been studied in the context of breast cancer progression. EXPERIMENTAL DESIGN We assessed expression levels...
Cyclooxygenase-2 (COX-2) is emerging as an important cancer biomarker and is now an experimental target for solid tumor treatment.However, no study has exclusively focused on COX-2 expression in early lesions such as ductal carcinoma in situ (DCIS). We examined COX-2 expression by immunohistochemistry in 46 cases of women undergoing surgical resection for DCIS. We found that COX-2 expression wa...
We propose, Trustworthy Explainability Acceptance metric to evaluate explainable AI systems using expert-in-the-loop. Our calculates acceptance by quantifying the distance between explanations generated system and reasoning provided experts based on their expertise experience. also evaluates trust of include different groups our mechanism. can be easily adapted any Interpretable used in standar...
IMPORTANCE While the prevalence of ductal carcinoma in situ (DCIS) of the breast has increased substantially following the introduction of breast-screening methods, the clinical significance of early detection and treatment for DCIS remains unclear. OBJECTIVE To investigate the survival benefit of breast surgery for low-grade DCIS. DESIGN, SETTING, AND PARTICIPANTS A retrospective longitudi...
Correct diagnosis and treatment are crucial for DCIS because it is a direct precursor of potentially lethal invasive breast cancer (IBC). As a result of mammographic screening, the incidence of DCIS rose from 1.87% per 100,000 women from 1973-1975 to 32.5% per 100,000 in 2005. The incidence of DCIS is strongly associated with advanced age, an older age at the time of the first birth or nullipar...
RATIONALE AND OBJECTIVES To evaluate the sensitivity of high-resolution breast-specific gamma imaging (BSGI) for the detection of ductal carcinoma in situ (DCIS) based on histopathology and to compare the sensitivity of BSGI with mammography and magnetic resonance imaging (MRI) for the detection of DCIS. MATERIALS AND METHODS Twenty women, mean 55 years (range 34-76 years), with 22 biopsy-pro...
We report magnetic resonance (MR) imaging findings of ductal carcinoma in situ (DCIS) within a fibroadenoma in a 42-year-old woman. Dynamic MR imaging revealed the mass to have 2 components with different kinetics. A nodular area within the mass showed faster initial enhancement followed by earlier washout and was histologically proven to be DCIS. Dynamic MR imaging reflected differences in vas...
Ductal carcinoma in situ (DCIS; intraductal carcinoma) is a noninvasive breast cancer originating from the cells that line the mammary ducts. Patients with DCIS can be asymptomatic at the time of presentation (radiographic findings on mammogram) or present with symptoms such as a palpable mass or nipple discharge [1]. We present an unusual case of DCIS in a 40 year old woman with recent palpabl...
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