1,721,164 research outputs found
Chirurgia delle metastasi epatiche da tumori dell’apparato urinario e genitale maschile
No full textHepatic metastases from genito-urinary tract neoplasms are infrequently eligible for surgical treatment. Nevertheless, some patients affected by primary renal adenocarcinoma or by Wilms' tumor, with single or lobe-confined hepatic metastasis, can be enrolled for a surgical excision of the hepatic lesion. Selection criteria of the patients are fully discussed; surgical treatment by anatomical resections (segmentectomy or hepatectomy) with primary parenchymal dissection are preferre
Vascular access in oncology patients
No full textAdequate vascular access is of paramount importance in oncology patients. It is
important in the initial phase of surgical treatment or chemotherapy, as well as
in the chronic management of advanced cancer and in the palliative care setting.
We present an overview of the available vascular access devices and of the most
relevant issues regarding insertion and management of vascular access. Particular
emphasis is given to the use of ultrasound guidance as the preferred technique of
insertion, which has dramatically decreased insertion-related complications.
Vascular access management has considerably improved after the publication of
effective guidelines for the appropriate nursing of the vascular device, which
has reduced the risk of late complications, such as catheter-related bloodstream
infection. However, many areas of clinical practice are still lacking an
evidence-based background, such as the choice of the most appropriate vascular
access device in each clinical situation, as well as prevention and treatment of
thrombosis. We suggest an approach to the choice of the most appropriate vascular
access device for the oncology patient, based on the literature available to
date
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
Esophageal perforation and caustic injury : emergency management of caustic ingestion
No full textDiagnosis and treatment of caustic ingestion injuries remain controversial. Based on experience with a wide spectrum of upper gastrointestinal tract injuries from caustic ingestion, prospectively observed in 58 adult patients treated in a teaching hospital in Milan, the authors suggest an early staging of the lesions by endoscopy, followed by resective surgery for high-degree esophagogastric lesions. Ingestion of a large amount of corrosive agent results in a life-threatening condition that requires a much more aggressive diagnostic and therapeutic approach than was formerly recommended. Early surgery plays a fundamental role in the prevention of acute hemorrhagic and perforative complications as well as of development of scar tissue and neoplastic stricture over time. The multidisciplinary approach to the management of these patients is underlined, stressing the need of close cooperation between a number of different specialists
Development of an Internet-based reference framework among Mediterranean countries to share scientific resources and findings in the management of colorectal cancer
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