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How to cite / Atıf için: Taşkent İ, Danışan G, Aydın AM. Situs inversus totalis with double superior vena cava: An unusual case report.

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Introduction: Patients undergoing maintenance hemodialysis have unique risk factors that render them prone to ischemia. To what extent coronavirus infectious disease 2019 (COVID-19) increases this risk is unknown.Methods: This retrospective cohort study included incident patients undergoing maintenance hemodialysis from one city in Turkey. A comparison was made between those who developed COVID-19 and those who did not for clinical variables. Independent predictors of acute ischemic complications in the total cohort were assessed using the logistic regression analysis.Findings: By the start of the pandemic in Turkey, 33 of 154 (21.4%) patients developed COVID-19. During the 15 months of median follow-up after the start of the pandemic, 16 (10.4%) patients developed acute ischemic complications. These included acute myocardial infarction (n = 10), acute ischemic stroke (n = 4), acute peripheral artery thrombosis (n = 1), and pulmonary thromboembolism (n = 1). Overall, acute ischemic events occurred more commonly in those who experienced COVID-19 (24.2% vs. 6.6%, p = 0.007).Ischemia-free survival was significantly shorter in the COVID-19 group (p = 0.001). In the eight patients with COVID-19, ischemic complications emerged at a median 185 (range 21-306) days after the diagnosis of COVID-19. While age, dialysis vintage, and experience of COVID-19 were found as factors significantly associated with the development of acute ischemic events in univariate analysis, the association between COVID-19 and acute ischemia remained significant in the multivariate regression model (odds ratio 3.99, 95% CI [1.3, 12.13], p = 0.016). During the pandemic, 23 (14.9%) patients died. Overall survival was significantly shorter among those who developed acute ischemic event (p < 0.001). The hazard ratio of acute ischemic event for death was 6.76 (95% CI [2.92, 15.66], p < 0.001). Discussion: A considerable number of patients undergoing maintenance hemodialysis developed acute ischemic complications weeks to months after the resolution of COVID-19. Hemodialysis patients appear to require specific interventions in order to prevent subsequent acute ischemic events after the resolution of COVID-19.

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How to cite / Atıf için: Küpeli A, Koçak M, Danışan G, Ufuk F, Kaya F, Taşkent İ. Role of the contrast-enhanced breast MR angiography in characterizing suspicious breast lesions and evaluating the relationship between prognostic factors. This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND 4.0) where it is permissible to download, share, remix, transform, and buildup the work provided it is properly cited. The work cannot be used commercially without permission from the journal. AbstractAim: Breast cancer is the most commonly diagnosed cancer in women, and mammography and ultrasonography are the most frequently used diagnostic radiological methods. Although they are highly sensitive, their specificity is low. Angiography can be added as a standard breast magnetic resonance imaging (MRI) protocol to increase specificity. In this study, we aimed to investigate the effectiveness of breast vascularity by evaluating the presence of an adjacent vessel sign (AVS) and increased ipsilateral breast vascularity (IIBV) in characterizing breast masses. Methods: 135 patients with a mean age of 47 years with radiologically or clinically suspicious breast masses underwent breast MRI before biopsy. The contrast-enhanced three-dimensional MR angiograms of the breasts were investigated for the presence of AVS and IIBV to characterize suspicious breast masses, and their correlation with histopathological prognostic factors were evaluated. Results: Patients' age, tumor size, and the presence of AVS and IIBV were significantly higher in malignant masses than in benign masses (P<0.001). The sensitivity, specificity, and accuracy of AVS and IIBV in predicting malignant masses from benign ones were 75%, 79.3%, 77% and 56.9%, 90.4% and 72.5%, respectively. In malignant masses, AVS and IIBV were both significantly associated with ER (P=0.005, P<0.001) and PR expression (P=0.003, P<0.001). We found no relationship between AVS, IIBV and C-ERBB2 expression (P=0.245 and P=0.085, respectively). Conclusion: The presence of AVS and IIBV as determined from contrast-enhanced 3D MR angiograms may be reliable parameters for further characterizing suspicious breast masses, both of which seem to be related with ER and PR expression. Öz Amaç: Meme kanseri, kadınlarda en sık tanı alan kanser olup, mamografi ve ultrasonografi en sık kullanılan radyolojik yöntemlerdir. Bu yöntemlerin duyarlılığı yüksek olmasına rağmen, özgüllükleri düşüktür. Anjiyografi, özgüllüğü artırmak için standart bir meme manyetik rezonans görüntüleme (MRG) protokolü olarak eklenebilir. Bu çalışmada amacımız, komşu damar işareti (KDİ) ve artmış ipsilateral meme vaskülaritesi (AİMV) içeren meme damarlanmasının, meme kitlelerini karakterize etmedeki etkinliğini araştırmak ve histopatolojik prognostik faktörlerle korelasyonunu ortaya koymaktır. Yöntemler: Mart 2017 -Ocak 2019 tarihleri arasında radyolojik veya klinik olarak şüpheli meme kitleleri olan 135 hastaya (yaş aralığı: 19-79 yıl, ort....

How to cite / Atıf için: Taşkent İ, Danışan G, Yıldırım H. A comparative evaluation of bilateral hippocampus and amygdala volumes with ADC values in pediatric primary idiopathic partial epilepsy patients.