42 research outputs found

    Colonic Metastasis from Carcinoma of the Breast that Mimicks a Primary Intestinal Cancer

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    Although the lung, liver, or bones are the most common location for distant metastases in breast cancer patients, metastases to the intestinal tract are very rarely recognized in the clinic. We will present an unusual case of colonic metastasis from a carcinoma of the breast that mimics a primary intestinal cancer, along with a through review of English language medical literature. Despite the fact that isolated gastrointestinal (GI) metastases are very rare and much less common than benign disease processes or second primaries of the intestinal tract in patients with a history of breast cancer, metastatic disease should be given consideration whenever a patient experiences GI symptoms

    Postmastectomy irradiation in breast in breast cancer patients with T1-2 and 1-3 positive axillary lymph nodes: Is there a role for radiation therapy?

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    <p>Abstract</p> <p>Background</p> <p>We aimed to evaluate retrospectively the correlation of loco-regional relapse (LRR) rate, distant metastasis (DM) rate, disease free survival (DFS) and overall survival (OS) in a group of breast cancer (BC) patients who are at intermediate risk for LRR (T1-2 tumor and 1-3 positive axillary nodes) treated with or without postmastectomy radiotherapy (PMRT) following modified radical mastectomy (MRM).</p> <p>Methods</p> <p>Ninety patients, with T1-T2 tumor, and 1-3 positive nodes who had undergone MRM received adjuvant systemic therapy with (n = 66) or without (n = 24) PMRT. Patient-related characteristics (age, menopausal status, pathological stage/tumor size, tumor location, histology, estrogen/progesterone receptor status, histological grade, nuclear grade, extracapsular extension, lymphatic, vascular and perineural invasion and ratio of involved nodes/dissected nodes) and treatment-related factors (PMRT, chemotherapy and hormonal therapy) were evaluated in terms of LRR and DM rate. The 5-year Kaplan-Meier DFS and OS rates were analysed.</p> <p>Results</p> <p>Differences between RT and no-RT groups were statistically significant for all comparisons in favor of RT group except OS: LRR rate (3%vs 17%, p = 0.038), DM rate (12% vs 42%, p = 0.004), 5 year DFS (82.4% vs 52.4%, p = 0.034), 5 year OS (90,2% vs 61,9%, p = 0.087). In multivariate analysis DM and lymphatic invasion were independent poor prognostic factors for OS.</p> <p>Conclusion</p> <p>PMRT for T1-2, N1-3 positive BC patients has to be reconsidered according to the prognostic factors and the decision has to be made individually with the consideration of long-term morbidity and with the patient approval.</p

    Unraveling Molecular Fingerprints of Catalytic Sulfur Poisoning at the Nanometer Scale with Near-Field Infrared Spectroscopy

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    Fundamental understanding of catalytic deactivation phenomena such as sulfur poisoning occurring on metal/metal-oxide interfaces is essential for the development of high-performance heterogeneous catalysts with extended lifetimes. Unambiguous identification of catalytic poisoning species requires experimental methods simultaneously delivering accurate information regarding adsorption sites and adsorption geometries of adsorbates with nanometer-scale spatial resolution, as well as their detailed chemical structure and surface functional groups. However, to date, it has not been possible to study catalytic sulfur poisoning of metal/metal-oxide interfaces at the nanometer scale without sacrificing chemical definition. Here, we demonstrate that near-field nano-infrared spectroscopy can effectively identify the chemical nature, adsorption sites, and adsorption geometries of sulfur-based catalytic poisons on a Pd(nanodisk)/Al2O3 (thin-film) planar model catalyst surface at the nanometer scale. The current results reveal striking variations in the nature of sulfate species from one nanoparticle to another, vast alterations of sulfur poisoning on a single Pd nanoparticle as well as at the assortment of sulfate species at the active metal-metal-oxide support interfacial sites. These findings provide critical molecular-level insights crucial for the development of long-lifetime precious metal catalysts resistant toward deactivation by sulfur

    Strategic Effects of Service Innovation on Financial and Market Performance

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    The reason for the emphasis on innovation and strategy was the need for organizations to be successful in performance criteria and growth aspirations against competitors. The fact that the competition continues to increase day by day and the entrance to the market is becoming more difficult in every sector shows the fact that companies need to improve their innovation skills in order to ensure sustainability in national or international activities. In the research, the effects of service innovation activities on financial and market performance, as well as strategic analysis and strategic orientation, are examined in banks which have a significant position in the service sector. The surveys were collected from 358 (white-collar) employees at the expert level, after the research model and the sector to be researched were determined. SPSS 25 and AMOS programs were used in the analysis, and the Sobel Test and Hayes process were used for mediation variable analysis. According to survey data, service innovation has a positive impact on both strategic orientation and strategic analysis, as well as financial and market performance. In addition, it is understood that strategic analysis and the mediation effect of strategic orientation variables exist

    Aspects of biology of the deep-water pandalid shrimp Plesionika martia (A. Milne-Edwards, 1883) from Sigacik Bay (eastern Mediterranean)

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    WOS: 000300803000008Some aspects concerning the reproduction, growth, and population dynamics of Plesionika martia were studied. Individuals were collected monthly between May 2008 and April 2009 during surveys conducted using a commercial trawl vessel. Samples were collected from Sigacik Bay (Aegean Sea, eastern Mediterranean) at depths ranging from 494 to 550 m. A total of 2110 individuals (766 males and 1344 females) were caught during these monthly surveys. The carapace length (Cl,) of the males ranged from 12.4 to 22.1 mm, and in females the CL ranged between 11.5 and 24.9 mm. The values of both CL and weight in females consistently exceeded that of males throughout the year. Although ovigerous females were observed throughout the year, the main reproductive period is suggested to be from May to December. In all groups examined, the values of allometric coefficient b were less than 3. Estimates of the Von Bertalanffy growth parameters were L-Y = 26.25 mm and k = 0.38 year(-1) in females, and L-Y = 23.63 mm and k = 0.49 year(-1) in males

    The effect of a flavonoid fractions diosmin + hesperidin on radiation-induced acute proctitis in a rat model

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    Background: To explore the protective effect of a flavonoid fractions diosmin + hesperidin (Daflon), against radiation-induced acute proctitis in an experimental rat model. Materials and Methods: Thirty four rats were divided into four groups. The rats in Group 1 received Daflon and underwent irradiation. The rats in Group 2 received no Daflon and underwent irradiation. The rats in Group 3 received Daflon and underwent sham irradiation. The rats in Group 4 received no Daflon and underwent sham irradiation. Daflon emulsion (100 mg/kg/day) was administered via an orogastric feeding tube to the rats in groups 1 and 3 starting from 1 day prior to irradiation until the euthanasia day (day 15 following irradiation). Radiation therapy was delivered on a cobalt-60 unit using a single fraction of 17.5 Gy defined at a depth of 1 cm through an anterior portal. Slides were examined by the same pathologist under a light microscope two times in a blinded manner. Results: When compared to group 2, the rats of Group 1 showed less glandular distortion and less mucosal inflammation with less infiltration of the crypt epithelia by the inflammatory cells (P &lt; 0.001). A statistically significant increase in all parameters but muscular wall thickness was observed for the rats in Group 2 as compared to the group 3 and 4. Conclusions: Administration of a dose of 100 mg/kg/day of the diosmin + hesperidin resulted in decreased morphologic inflammatory changes. This drug may have protective effects against radiation-induced acute proctitis

    The effect of a flavonoid fractions diosmin + hesperidin on radiation-induced acute proctitis in a rat model

    No full text
    Background: To explore the protective effect of a flavonoid fractions diosmin + hesperidin (Daflon), against radiation-induced acute proctitis in an experimental rat model. Materials and Methods: Thirty four rats were divided into four groups. The rats in Group 1 received Daflon and underwent irradiation. The rats in Group 2 received no Daflon and underwent irradiation. The rats in Group 3 received Daflon and underwent sham irradiation. The rats in Group 4 received no Daflon and underwent sham irradiation. Daflon emulsion (100 mg/kg/day) was administered via an orogastric feeding tube to the rats in groups 1 and 3 starting from 1 day prior to irradiation until the euthanasia day (day 15 following irradiation). Radiation therapy was delivered on a cobalt-60 unit using a single fraction of 17.5 Gy defined at a depth of 1 cm through an anterior portal. Slides were examined by the same pathologist under a light microscope two times in a blinded manner. Results: When compared to group 2, the rats of Group 1 showed less glandular distortion and less mucosal inflammation with less infiltration of the crypt epithelia by the inflammatory cells (P < 0.001). A statistically significant increase in all parameters but muscular wall thickness was observed for the rats in Group 2 as compared to the group 3 and 4. Conclusions: Administration of a dose of 100 mg/kg/day of the diosmin + hesperidin resulted in decreased morphologic inflammatory changes. This drug may have protective effects against radiation-induced acute proctitis

    Pancreas is an Unusual Initial Metastatic Site of Intracranial Hemangiopericytoma

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    Intracranial hemangiopericytoma (HPC) is rare and aggressive tumor with local recurrences as well as distant metastases. The majority of metastases are encountered in bone, lung, and liver. Pancreatic metastasis is extremely rare. Described in the present report is the case of a 41-year-old woman who had undergone surgical resection of intracranial HPC 16 years earlier. The tumor recurred 3 years after the operation and was successfully managed with surgery followed by adjuvant radiotherapy. Thirteen years later, an isolated pancreatic metastasis developed. Patient underwent Whipple procedure for pancreatic head lesion and received adjuvant radiotherapy. Patient died of extensive disease in lungs, bones, mediastinum, cranium and peritoneal carcinomatosis in abdomen 17 months after pancreatic surgery
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