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Wyświetlanie 1-10 z 306
Tytuł:
Heterogenność raka piersi – sprawozdanie z IMPAKT Breast Cancer Conference
Breast cancer heterogeneity – report from IMPAKT Breast Cancer Conference
Autorzy:
Pogoda, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/1066065.pdf
Data publikacji:
2013
Wydawca:
Medical Education
Tematy:
HER2
biopsja przerzutu
heterogenność
mTOR
profile molekularne
Opis:
On 2–4 May 2013, in Brussels took place the 5th IMPAKT conference on translational research in breast cancer. The most important issue raised during the conference was the phenomenon of breast cancer heterogeneity, both inter- and intratumour. Heterogeneity of breast cancer was confirmed at the molecular level, showing the differences in the frequency of genetic aberrations (typically PIK3CA, TP53 and ARID1A) in patients with hormone-dependent advanced breast cancer (BOLERO-2 trial). The results of genetic tests were also presented, which showed that in order to reduce the impact of heterogeneity within the tumor, 3 biopsies should be performed from each breast cancer. The most common disorders of PI3K/mTOR pathway were analyzed depending on the molecular type of breast cancer. However, an attempt to determine by immunohistochemistry biomarkers predicting response to combination therapy with everolimus and trastuzumab failed. The results of two studies, which analyzed the value of molecular tests in predicting late recurrence of breast cancer (in 5–10 years after diagnosis), were presented – the best results were achieved with PAM50 and Breast Cancer Index. The latest discoveries in molecular imaging were also presented – it allows for early assessment of treatment efficacy.
W dniach 2–4 maja 2013 r. w Brukseli odbyła się 5. konferencja IMPAKT poświęcona tematyce badań podstawowych nad rakiem piersi. Najważniejszym zagadnieniem poruszanym podczas konferencji było zjawisko heterogenności raka piersi, występujące zarówno między guzami, jak i w obrębie jednego guza. Potwierdzono heterogenność raka piersi na poziomie molekularnym, wykazując różnice w częstości aberracji genetycznych (najczęściej w obrębie PIK3CA, TP53 i ARID1A) w guzach u chorych na hormonozależnego, zaawansowanego raka piersi (badanie BOLERO-2). Przedstawiono również wyniki badań genetycznych, które wykazały, że aby ograniczyć wpływ heterogenności w obrębie guza, należy wykonywać 3 biopsje z każdego raka piersi. Zbadano najczęstsze zaburzenia szlaku PI3K/mTOR w zależności od typu molekularnego raka piersi. Natomiast próba określenia za pomocą immunohistochemii biomarkerów odpowiedzi na terapię skojarzoną ewerolimusem z trastuzumabem nie powiodła się. Zaprezentowano wyniki dwóch prac naukowych, w których analizowano wartość testów molekularnych w predykcji późnego nawrotu raka piersi (5–10 lat od rozpoznania) – najlepsze wyniki osiągnięto w przypadku PAM50 i Breast Cancer Index. Poza tym przedstawiono najnowsze doniesienia w zakresie obrazowania molekularnego pozwalającego na wczesną ocenę skuteczności stosowanej terapii.
Źródło:
OncoReview; 2013, 3, 2; 110-114
2450-6125
Pojawia się w:
OncoReview
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fertility and breast cancer
Autorzy:
Kufel-Grabowska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1064776.pdf
Data publikacji:
2016
Wydawca:
Medical Education
Tematy:
breast cancer during pregnancy
breast cancer in young women
fertility
fertility preservation strategies
Opis:
Breast cancer is the most common cancer among females worldwide. The mean age of breast cancer patients is > 60 yrs old, and it is seldom found in women < 40 yrs old (6.5%) and in very young women < 35 yrs old (0.6%). In young females, fertility and all its aspects are an additional therapeutic challenge. Before initiating treatment, the oncologist should offer effective contraception to be applied throughout the therapy, bearing in mind that fertility preservation is of utmost importance. When it comes to breast cancer in pregnancy, the attending physician should use a therapy which is safe for both the mother and the foetus. Chemotherapy, radiotherapy, hormonal therapy and immunotherapy can, to a lesser or greater degree, damage the ovarian function resulting in amenorrhea in women < 50 yrs (33–76%). However, owing to fertility preservation strategies, more and more pregnancies are successful, even in breast cancer survivors.
Źródło:
OncoReview; 2016, 6, 4; A157-161
2450-6125
Pojawia się w:
OncoReview
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Breast Cancer in Art Painting
Autorzy:
Forma, Ewa
Bernaciak, Magdalena
Bryś, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/764935.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
breast cancer
art paintings
famous painters
Opis:
Breast cancer is an emotive cancer. It is a disease that affects a visible sexual organ and it is the commonest single cause of death of women between 40 and 60 years of age. Nevertheless, this type of cancer was infrequently depicted in art paintings. In this article the themes from the breast cancer in famous art paintings are discussed.
Źródło:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2010, 6; 61-68
1730-2366
2083-8484
Pojawia się w:
Acta Universitatis Lodziensis. Folia Biologica et Oecologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changing paradigms in breast cancer treatment
Autorzy:
Ali, Shan
Buczek, Dagmara
Jassem, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/1196786.pdf
Data publikacji:
2020-12-03
Wydawca:
Gdański Uniwersytet Medyczny
Tematy:
breast cancer
sentinel node biopsy
breast-conserving surgery
targeted therapy
molecular profiles
Opis:
In only the past century, the landscape of breast cancer treatment has completely changed. The Halstedian hypothesis of the “contiguous spread” of breast cancer has been replaced by a consideration of its systemic nature. Today, patients with early-stage breast cancer are managed with breast-conserving therapy, which is as effective as mastectomy. Sentinel lymph node biopsy has largely replaced axillary lymph node dissection. Post-operative radiotherapy, chemotherapy and endocrine therapy have increased survival. Pre-operative cytotoxic therapy allows for less extensive surgery and for a curative resection even in more advanced stages. Rapid progress in molecular oncology revealed a large heterogeneity of breast cancer, resulting in a more personalized approach. Targeted therapies directed against epidermal growth factor receptor type 2 (HER2) have improved survival in HER2-positive breast cancer, which was once a poor-prognosis entity. Multi-gene prognostic signatures better predict prognosis and allow many patients to avoid chemotherapy. Personalized treatment has resulted in decreased toxicity and an improved quality of life. Within the past decades, breast cancer has become a good-prognosis malignancy with a five-year survival in the range of 80-85%. Future development of personalized medicine may further refine treatment based on the tumor’s molecular features.
Źródło:
European Journal of Translational and Clinical Medicine; 2020, 3, 2; 53-63
2657-3148
2657-3156
Pojawia się w:
European Journal of Translational and Clinical Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multimodal Ultrasonic Imaging for Breast Cancer Detection
Autorzy:
Camacho, J.
Medina, L.
Cruza, J. F.
Moreno, J. M.
Fritsch, C.
Powiązania:
https://bibliotekanauki.pl/articles/176695.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ultrasound imaging
ultrasound tomography
breast cancer
Opis:
Ultrasound is used for breast cancer detection as a technique complementary to mammography, the standard screening method. Current practice is based on reflectivity images obtained with conventional instruments by an operator who positions the ultrasonic transducer by hand over the patient’s body. It is a non-ionizing radiation, pain-free and not expensive technique that provides a higher contrast than mammography to discriminate among fluid-filled cysts and solid masses, especially for dense breast tissue. However, results are quite dependent on the operator’s skills, images are difficult to reproduce, and state-of-the-art instruments have a limited resolution and contrast to show micro-calcifications and to discriminate between lesions and the surrounding tissue. In spite of their advantages, these factors have precluded the use of ultrasound for screening. This work approaches the ultrasound-based early detection of breast cancer with a different concept. A ring array with many elements to cover 360. around a hanging breast allows obtaining repeatable and operator-independent coronal slice images. Such an arrangement is well suited for multi-modal imaging that includes reflectivity, compounded, tomography, and phase coherence images for increased specificity in breast cancer detection. Preliminary work carried out with a mechanical emulation of the ring array and a standard breast phantom shows a high resolution and contrast, with an artifact-free capability provided by phase coherence processing.
Źródło:
Archives of Acoustics; 2012, 37, 3; 253-260
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Web–based framework for breast cancer classification
Autorzy:
Bruździński, T.
Krzyżak, A.
Fevens, T.
Jeleń, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/91866.pdf
Data publikacji:
2014
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
breast cancer
classification
cytological image
aspiration biopsy
feature vector
classifier
multilayer perceptron
segmentation algorithm
Opis:
The aim of this work is to create a web-based system that will assist its users in the cancer diagnosis process by means of automatic classification of cytological images obtained during fine needle aspiration biopsy. This paper contains a description of the study on the quality of the various algorithms used for the segmentation and classification of breast cancer malignancy. The object of the study is to classify the degree of malignancy of breast cancer cases from fine needle aspiration biopsy images into one of the two classes of malignancy, high or intermediate. For that purpose we have compared 3 segmentation methods: k-means, fuzzy c-means and watershed, and based on these segmentations we have constructed a 25–element feature vector. The feature vector was introduced as an input to 8 classifiers and their accuracy was checked. The results show that the highest classification accuracy of 89.02 % was recorded for the multilayer perceptron. Fuzzy c–means proved to be the most accurate segmentation algorithm, but at the same time it is the most computationally intensive among the three studied segmentation methods.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2014, 4, 2; 149-162
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Epidemiology of breast cancer in Podkapackie voivodship
Autorzy:
Gustalik, Joanna
Bartusik-Aebisher, Dorota
Ostańska, Elżbieta
Przyczyna, Piotr
Osuchowski, Michał
Aebisher, David
Galiniak, Sabina
Kaznowska, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/454657.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
breast cancer
statistics
epidemiology
podkarpackie voivodship
Opis:
Introduction. Breast cancer is the second most prevalent reason for cancer deaths after lung cancer. Incidence rates have increased worldwide. Aim. To present epidemiology of breast cancer in Podkapackie voivodship. Material and methods. This analysis was performed using a systematic literature search. Results. In the Podkarpackie voivodship up until 2014, the incidence rate of female breast cancer was rising and in 2015 it dropped by 68 cases. Even though the survival rate is increasing, it is still one of the leading causes of cancer deaths placing second after lung cancer. Conclusion. Mortality rate, unfortunately, rose gradually. This shows that even though there is a National Health Program aiming at breast cancer awareness and prevention, it is still not enough to reduce the number of breast cancer deaths.
Źródło:
European Journal of Clinical and Experimental Medicine; 2019, 3; 242-245
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Primary and secondary prevention of breast cancer
Autorzy:
Kolak, Agnieszka
Kamińska, Marzena
Sygit, Katarzyna
Budny, Agnieszka
Surdyka, Dariusz
Kukiełka-Budny, Bożena
Burdan, Franciszek
Powiązania:
https://bibliotekanauki.pl/articles/987031.pdf
Data publikacji:
2017
Wydawca:
Instytut Medycyny Wsi
Tematy:
breast cancer
primary and secondary prevention
risk factors
life style
mammography
modern diagnostics methods
Opis:
Introduction. Breast cancer is the most common cancer among women and is the second cancer frequently occurring worldwide of newly-diagnosed cancers. There is much evidence showing the influence of life style and environmental factors on the development of mammary gland cancer (high-fat diet, alcohol consumption, lack of physical exercise), the elimination of which (primary prevention) may contribute to a decrease in morbidity and mortality. Secondary prevention, comprising diagnostic tests (e.g. mammography, ultrasonography, magnetic resonance imaging, breast self-examination, as well as modern and more precise imaging methods) help the early detection of tumours or lesions predisposing to tumours. Objective. The aim of this study paper is to review current knowledge and reports regarding primary and secondary prevention of breast cancer. State of knowledge. It is estimated that nearly 70% of malign tumours are caused by environmental factors, whereas in breast cancer this percentage reaches 90–95%. There are national programmes established in many countries to fight cancer, where both types of prevention are stressed as serving to decrease morbidity and mortality due to cancers. Conclusions. Cancer prevention is currently playing a key role in the fight against the disease. Behaviour modification, as well as greater awareness among women regarding breast cancer, may significantly contribute towards reducing the incidence of this cancer. Another important aspect is the number of women undergoing diagnostic tests, which still remains at an unsatisfactory level.
Źródło:
Annals of Agricultural and Environmental Medicine; 2017, 24, 4
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Neoadjuvant therapy in breast cancer – objectives and tasks
Autorzy:
Ostańska, Elżbieta
Bartusik-Aebisher, Dorota
Aebisher, David
Kaznowska, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/454710.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
neoadjuvant therapy (NCT)
breast cancer (BC)
triple negative breast cancer (TNBC)
Opis:
Introduction. Neoadiuvant therapy (NCT) in the treatment of breast cancer is employed for patients with early stage disease or with inoperable disease. NCT can decrease the tumor volume. It can facilitate breast conservation therapy. Response to NCT is a strong predictor of outcome breast cancer (BC). Direct target therapies has markedly improved the result of treatment BC. Aim. Therapy for breast cancer continues to improve. The importance of tumor burden on local control rates will be in the future. Material and methods. This analysis was performed using a systematic literature search. Results. The latest scientific reports give hope for greater safety and a better life for patients based on optimized and effective therapy. Conclusion. Currently, improving the effectiveness of breast cancer treatment is mainly related to the optimal use of classic therapeutic strategies. New classes of substances have been approved for treatment or are in advanced stages of clinical development.
Źródło:
European Journal of Clinical and Experimental Medicine; 2019, 2; 153-156
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 306

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