99 research outputs found

    Blurred vision due to choroidal metastasis as the first manifestation of lung cancer: A case report

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    <p>Abstract</p> <p>Background</p> <p>Reduction in visual acuity combined with blurred vision is rarely the first sign of lung cancer and very few cases have been announced globally.</p> <p>Case presentation</p> <p>A case of a 46-year-old man who admitted with blurred vision is presented. His medical history, apart from a mild gastritis under treatment was negative. Ocular examination revealed a decrease in visual acuity due to a choroidal tumor. Further image body scans demonstrated a right lung lesion with dissemination to other organs. Diagnosis of a non-small cell lung cancer established after a VATS biopsy carried out.</p> <p>Conclusion</p> <p>Blurred vision due to choroidal metastasis as the primary symptom of lung cancer is very uncommon. A great index of suspicion is essential when a choroidal lesion appears.</p

    Nine years experience in surgical approach of leiomyomatosis of esophagus

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    <p>Abstract</p> <p>Background</p> <p>Leiomyomas of esophagus, although rare, are the most frequent benign tumors of esophagus. Aim of this study is the presentation of 7 patients with esophageal leiomyomas who underwent surgical treatment during a 9-year period.</p> <p>Methods</p> <p>Epidemiological data (sex, age), the presenting symptoms, diagnostic examinations, tumor location, histopathological findings and the safety and efficacy of surgical resection are analyzed and assessed.</p> <p>Results</p> <p>5 men and 2 women with mean age of 56.9 years were operated. In 3 cases the tumor was located at the lower esophagus, while in the other 4 cases, the leiomyoma was found at the median third of esophagus. 4 patients had severe symptoms related to the leiomyoma, such as dysphagia and epigastric pain. All patients underwent a right postolateral thoracotomy with enucleation of the lesion. None of them received resection of part of the esophagus. The mean diameter of the resected tumors was 4.3 cm. The dimensions of leiomyomas were immediately associated with the symptoms. In no case was detected malignancy or recurrence. All patients were relieved from their symptoms, while postoperative morbidity and mortality did not occur.</p> <p>Conclusions</p> <p>Esophageal leiomyoma is a benign tumor, which causes symptoms only if its size becomes large. Surgical enucleation is considered to be safe and effective, without complications.</p

    Financial market development, global financial crisis and economic growth : evidence from developing nations

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    Emerging and frontier markets in Africa have witnessed various economic and financial reforms aimed at integrating the domestic markets into the global financial market to attract investment. Whether these reforms promote high economic growth remains inconclusive. The paper applies the pooled mean group estimation technique to empirically re-investigate the link between financial market development, global financial crisis, and economic growth in selected African economies. The results strongly support our hypotheses that stock market and banking sector development promotes economic growth in the selected countries. Moreover, financial crisis reduce the positive effects of both the stock market and banking sector developments on economic growth. The study suggests that both the banking sector and stock market are important to deliver the long-run economic growth that the African region desired. Moreover, effort should be made to enact policy measures that would ensure development of the stock market which has received inadequate attention.info:eu-repo/semantics/publishedVersio

    A question of confidence. Is tourism as vulnerable to civil unrest as we think? A comparative analysis of the impact of Arab Spring on total reserves and tourism

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    This paper uses monthly data to compare how international tourism receipts and the overall economy responded to the Arab Spring Total Reserves were used as an indicator of the economy overall, because they reflect confidence in the economy through such factors as Foreign Direct Investment and the effects of capital flight. To examine the response, interrupted time series was employed, using the outbreak of Arab Spring as the key interruption. To separate the impact of Arab Spring from other events, two treated and two untreated cases were selected. The results show that tourist spending recovered faster than the overall economy

    A Roller Coaster Ride: An Empirical Investigation of the Main Drivers of Wheat Price

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    Over the last decade, commodity prices have registered substantial booms and busts marked by extreme volatility. Wheat in particular, one of the main non-oil commodities, has registered a roller-coaster in price levels which seems to be inconsistent with supply and demand fundamentals. To acutely investigate the drivers of wheat prices and quantify their impact, a Vector Error Correction Model (VECM) has been used. The exogenous variables have been distinguished into four groups: market-specific factors, broad macroeconomic determinants, speculative components, and weather variables. The quadriangulation of the determinants will enable us to better understand the movements in wheat price and identify the specific role of each component. The results show a mix of short and long term factors that are contributing to wheat price movements, and their effect should be taken into account in designing proper policy intervention to mitigate the negative impact of price shocks

    Short- and long-term growth effects of special interest groups in the U.S. states: A dynamic panel error-correction approach

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    The perception of special interest groups as a serious threat to economic growth has strengthened over the years; however, the vast empirical literature surrounding this claim has produced mixed and inconclusive results. This study re-examines the issue incorporating a potentially important aspect that has generally been ignored by previous studies, namely, the implicit suggestion by some of the theoretical works that the extent and the intensity of the growth effects of special interest groups may differ significantly over different time frames. Specifically, this study uses dynamic panel error-correction methods (Pesaran, Shin, and Smith (1999)) to properly determine whether these effects, if they exist, occur mostly in the short run or the long run based on data from a panel of 48 U.S. states for the years 1975 – 2004. The joint Hausman-type test selected the preferred model, which controls for human capital achievement, initial income, income inequality, and the tax burden. This model produced results which are in sharp contrast to the simple linearly negative or positive findings reported in much of the literature by indicating that special interest groups have significant non-linearly inverted U-shaped long-run effects on growth, and that it takes time (about 8 years) for the full effects to become evident. The results provide evidence that U.S. states face a threshold point below which special interest groups’ lobbying and rent-seeking activities boost long-run growth performance but above which they have damaging effects on long-run growth effort. This is confirmed by the Lind and Mehlum (2010) u-test which also suggests that the threshold point is reached when the activities and strength of special interest groups (measured by the percentage of each state’s public and private non-agricultural wage and salary employees who are union members, and which varies from 3.8% to 38.7%)) is at the 15.8% level
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