نتایج جستجو برای: breast tumors
تعداد نتایج: 404723 فیلتر نتایج به سال:
Background and Objective: Elevation of the b-HCG serum levels has been reported in several tumors including breast cancer, and it is usually associated with aggressiveness. The aim of this study was to examine the possible correlation between the b-HCG serum levels and different grades of breast cancer tumors in patients undergoing chemotherapy. Materials and Methods: This cross-sectional study...
Breast cancer is a frequent condition among Spanish women, being the number one in prevalence during 2018, representing 36.2% of all tumors affecting most type breast HR HER2 type.
Abstract Background and Objective: Breast cancer is the most common cancer in women. Telomerase enzyme is one of the major factors causing the development and proliferation of immortal cells such as cancer cell. The aim of this study was to evaluate telomerase activity in breast tissues of breast cancer patients and healthy people. Material and Methods: In this descriptive study, the sampl...
background: the etiology of breast cancer and our understanding on the carcinogenicity of different risk factors is impotant for control programms. objective: we investigated the expression of estrogen and progesterone receptors (er, pr), and human epithelial receptor 2 (her2) overexpression and its associations, with environmental risk factors among breast cancer patients. methods: we classif...
Background and purpose: Intelligent methods such as artificial neural networks (ANN) have been recently used as an efficient model for prediction and classification of tumors. Diagnosis of benign and malignant breast tumors based on morphological, clinical and demographic features without using invasive paraclinical methods is very important. The aim of this study was to provide a neural ne...
background: pharmacogenomics is the study of genetic variations among individuals to predict the probability that a patient will respond to single or multidrug chemotherapy. breast cancer is one of the most common cancers among women worldwide. treatment of breast cancer by application of biological rationales gives us the ability to match the correct pharmacology to individual tumour genetic p...
background: breast conservation therapy (bct) is the standard of care for early stage breast cancer. the procedure can be a challenge for the surgeon if the lesion is non-palpable. for excision of non-palpable breast lesions, they should be localized precisely before surgery. there are different techniques such as the wgl (wire guided localization), roll (radio-guided occult lesion localization...
Background: Estrogen-negative breast cancers have different clinical course, prognostic features and treatment response in comparison to estrogen receptor-positive (ER-positive) breast cancers. Human epidermal growth factor receptor 2 (HER2) oncoprotein has found to have a pivotal role in natural cell growth and cell division and is suggested to be directly related to tumor invasiveness in brea...
background and objective: determination of hormone receptor status in the management of breast cancer is well-established. the aim of this study was to evaluate the frequency of androgen receptor (ar) expression in invasive ductal carcinoma of breast. materials and methods: for this purpose, 55 cases of invasive ductal breast carcinoma were examined using a monoclonal antibody against ar on for...
mammary sarcomas are a heterogeneous group of malignant neoplasms that arise from the mammary stroma. primary sarcomas of the breast are extremely rare and comprise less than 0.1% of all malignant tumors of the breast. we present the case of a 56-year-old female diagnosed as stromal sarcoma, not otherwise specified - a very rare entity.
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