1,720,958 research outputs found
Resezioni coliche in urgenza. Un fattore critico per il rispetto dei criteri oncologici?
No full textE' possibile rispettare anche in urgenza, mediante una appropriata tecnica chirurgica, il rispetto dei criteri resettivi oncologici (T,N) della chirurgia colorettale
Perfore apandisitte pulmoner sekestrasyonun neden olduğu hemoptizi: Seyrek görülen bir olgunun raporu
No full textPulmonary sequestration is a rare and usually asymptomatic congenital anomaly. Optimal management of this condition is still a subject of debate, including superiority of surgical resection or angiographic embolization of the aberrant arterial vessel. Presently described is rare case of a 51-year-old male who presented with hemoptysis related to pulmonary sequestration associated with acute right lower quadrant abdominal pain caused by perforated appendicitis
GIST:GASTROINTESTINAL STROMAL TUMORS IL RUOLO DELLA CHIRURGIA NELLE VARIE FASI DELLA MALATTIA
No full textI GIST con presentazione in urgenza hanno una prognosi meno favorevole rispetto a quelli diagnosticati occasionalmente,in corso di indagini strumentali effettuate per altri motivi. Indice mitotico, sede, dimensioni e rottura tumorale permettono di identificare classi di rischio(basso,intermedio o elevato),importanti per definire la prognosi dei pazienti
Epaticodigiunoanastomosi nelle duodenocefalopancreasectomie e splenopancreasectomie totali: incidenza di fistole e di stenosi biliari con la tecnica di sutura continua in doppio strato
No full textIl confezionamento dell’anastomosi epatico-digiunale (EDS) può essere un intervento a sé stante o può fare parte di un intervento chirurgico più complesso (es. per patologia pancreatica) Le anastomosi bilio-digestive possono essere confezionate in sutura continua o interrotta, in singolo o doppio strato. Ad oggi non esistono studi randomizzati che confrontino l’incidenza di fistole o di stenosi biliari post-operatorie con tecniche chirurgiche di confezionamento dell’EDS in singolo o doppio strato. Nella nostra esperienza consideriamo le complicanze a seguito del confezionamento dell’EDS nell’ambito della patologia pancreatica (benigna e maligna) riportando l’incidenza delle fistole biliari (complicanze nel breve termine) e di stenosi biliari (complicanze nel lungo termine) con la tecnica di sutura continua in doppio strato. Su 800 pazienti sottoposti ad EDS dall'inizio del 2007 al giugno del 2019 l'incidenza di fistole biliari nel post-operatorio è risultata pari allo 0,9%, mentre l'incidenza di stenosi biliari su 284 pazienti sottoposti a EDS (dal 2007 fino al dicembre 2016) e vivi a 3 anni dall'intervento (follow up stabilito per fare diagnosi di stenosi) è risultato pari al 9,9%. Abbiamo inoltre valutato l'incidenza di queste complicanze relazionate a variabili pre-operatorie rappresentate dalla presenza o meno di ittero, vie biliari dilatate, posizionamento di DBE/DBEI o stent biliare e eventuale colecistectomia eseguita prima dell'intervento di confezionamento dell'EDS
Outcomes of double-layer continuous suture hepaticojejunostomy in pancreatoduodenectomy and total pancreatectomy
No full textBackground: This study aims to describe the technique and the results of double-layer continuous suture hepaticojejunostomy (HJ) following pancreatoduodenectomy (PD) and total pancreatectomy (TP). Methods: A prospectively maintained database was analyzed retrospectively to identify incidence and severity of biliary leaks (BL) (ISGLS definition), as well as of HJ stenosis (HJS), cholangitis, and need for redo-HJ (in patients with a follow-up & GE;3 years) in a consecutive series of 800 procedures (PD = 603; TP = 197). Predictors of biliary complications were also identified. Results: BLs occurred in 5 patients (0.6%), including 2 (0.3%) combined pancreatic and biliary leaks. Rates of HJS, cholangitis, and need for redo-HJ were 6.1%, 5.4%, and 2.0%, respectively. Incidence of BL was 0.6% in open procedures (4/587) and 0.4% in robotic operations (1/213). Incidence of late biliary complications was also equivalent in open and robotic procedures. Occurrence of BL was predicted by ASA IV status and duodenal cancer, HJS by any associated vascular procedure and hepatic duct size < 8 mm, cholangitis by any associated vascular procedure and normal bilirubin/hepatic enzymes, and redo HJ by history of cholecystectomy and neuroendocrine tumor/cancer. Discussion: Double layer continuous suture HJ is associated with low BL rates, and an acceptable incidence of late complications
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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