1,720,959 research outputs found
Internal Jugular Vein Pyogenic Capillary Hemangioma: A Case Report.
Full text linkInternal jugular vein hemangioma, also called pyogenic granuloma, is a rare tumor. Such a neoformation was accidentally discovered and excised in a middle-aged man. Histologic and immunohistochemical investigations were performed, and this case is compared with the poor amount of similar ones described in the literatur
Endovascular Management of Infected Femoral Artery Pseudoaneurysms in High-Risk Patients: A Case Series
No full textWe report our experience with the urgent treatment of two high-risk patients with infected femoral artery pseudoaneurysms (IFAPs) with the placement of a self-expandable covered stent (SECS). In both cases, there was no perioperative mortality and the aneurysm exclusion was successful without early or late stent thrombosis/stent fracture nor acute or chronic limb ischemia or limb loss. There was no recurrence of local or systemic infection during the follow-up period. Endovascular therapy represents a feasible treatment option for IFAPs in those patients for whom the risk of open surgical repair would be prohibitive, especially under urgent circumstances
Management of an Iatrogenic Pseudoaneurysm of the Superior Gluteal Artery by Percutaneous Ultrasound-Guided Thrombin Injection: A Case Report
No full textWe report the unusual case of a pseudoaneurysm of the superior gluteal artery (SGA) as a complication of a bone marrow biopsy. A 75-year-old man presented with pain and swelling of the left buttock 1 month after a bone marrow biopsy of the left iliac crest. The patient was treated by percutaneous ultrasound-guided thrombin injection (UGTI). The procedure was successful without any complication and the patient was discharged at home the same day. Follow-up at 3 months after the procedure confirmed the complete thrombosis of the pseudoaneurysm sac. At the best of our knowledge, UGTI of a pseudoaneurysm of the SGA has never been reported since now in the English literature
Neoplastic Embolization from Cardiac Papillary Fibroelastoma with Unusual Presentation: A Case Report
No full textPapillary fibroelastoma is the second most frequent primary tumor of the heart. We report the case of a cardiac papillary fibroelastoma, arising from the interatrial septum, symptomatic from distal embolization to lower limb arteries. Such a clinical presentation is extremely infrequent for cardiac papillary fibroelastomas. Moreover, the site of origin not from cardiac valves and the pathogenetic mechanism underlying the clinical manifestation both represent peculiar additional findings of our case
Growth Rate of Small Abdominal Aortic Aneurysms and Genetic Polymorphisms of Matrix MetalloProteases-1, -3, and -9
No full textGenetic variants of matrix metalloproteases (MMPs)-1, -3, and -9, together with clinical variables, might predict the growth rate (GR) of abdominal aortic aneurysm (AAA). Genotyping of MMP-1 (1,607 Gþ/G), MMP-3 ( 1,171 6A/5A), and MMP-9 microsatellite (13–26 cytosine–adenosine repeats around -90) from peripheral blood was performed in 137 AAA patients with two AAA diameter measurements (at least 3 months to 1 year apart). When the same technique (either ultrasound or computed tomography) was used for the two measurements, yearly GR was estimated and compared with MMP genotype and clinical features by linear and binary logistic regression. Collectively, 36 patients provided 94 observations, with a median GR of 3 mm/year (interquartile range, 0–5.8); GRs in carriers of MMP-1 polymorphism G/G, G/Gþ, and Gþ/Gþ genotype were 0.3, 3.5, and 4.7mm/year, respectively (p 1⁄4 0.008). In linear logistic regression, the main determinant of GR was growth arrest (GA, i.e., GR 1⁄4 0, occurring in 32 observations, 34%). In turn, GA occurredmainly in G/G MMP-1 genotype (odds ratio, 3.9; 95% confidence interval, 1.6–9.7; p 1⁄4 0.002), while variables accounting for GR > 0 were MMP-1 G þ /Gþ genotype, intake of any antihypertensive drug, and MMP-3 6A/6A genotype. Carriers of none, one, or two/three of these conditions accounted for a GR of 3, 4, and 9 mm/year, respectively (p 1⁄4 0.001). MMP-1 (1,607 Gþ/) variant is associated to differential GR in AAA: homozygous G deletion variant shows higher GA prevalence and lower GR, while carriers of G þ /Gþ MMP-1 genotype, together with intake of antihypertensive drugs, and 6A/6A in MMP-3 present cumulative GR increase
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
- …
