1,720,966 research outputs found
Left pneumonectomy for rapidly growing lung metastasis from phyllodes tumor
No full textDistant metastases occur in 10-25% of malignant phyllodes tumors of the breast, heralding fatal outcome within few months. Only four cases of successful resection of solitary pulmonary metastases from phyllodes tumor are described in the literature. We report the case of a 67-year-old woman who developed rapidly growing metastases (volume doubling time: 25 days) in the left lung, two years after mastectomy for malignant phyllodes tumor. The left lung was the only site of 18-FDG uptake at total-body PET scan and the patient was successfully treated by left pneumonectomy
Infezioni postoperatorie e fattori di rischio: studio prospettico in 1.363 resezioni polmonari consecutive.
No full textUtilizzo delle suturatici meccaniche vascolari in 650 resezioni polmonari consecutive.
No full textRisultati sulla efficacia dell'utilizzo delle suturatici meccaniche vascolari in 650 resezioni polmonari consecutiv
Tumori della parete toracica: trattamento delle infezioni protesiche di parete.
No full textIl trattamento delle infezioni protesiche di parete toracica sono un argomento ancora dibattuto e rappresenta un problema di non facile soluzione relativamente al trattamento. Attraverso l'analisi della nostra esperienza si analizzano i risultati dei trattamenti effettuati che, nella maggior parte dei casi è stato di tipo conservativo e raramente di sostizione della protesi infett
Peri-operative complications of video-assisted thoracoscopic surgery (VATS)
No full textVideo-assisted thoracoscopic surgery (VATS) has multiple indications for diagnosis and treatment of many different thoracic diseases; the commonest are lung wedge resection, pleural and mediastinal biopsy, treatment of pneumothorax, and pleurectomy. Moreover, in recent years a few surgeons have performed routinely major lung anatomic resections by VATS approach, including segmentectomy, lobectomy and pneumonectomy.
In our experience VATS constitutes about one-third of all thoracic surgical procedures. In the reviewed literature as in the most frequent complications after VATS procedures are: prolonged air leak, bleeding, infection, postoperative pain, port site recurrence and the need to convert the access in thoracotomy. The complication and mortality rates are generally very low and VATS procedures are considered safe and effective.
It is recommended that all thoracic surgery departments audit their VATS procedures for peri-operative morbidity and mortality to compare results and outcomes
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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