1,720,975 research outputs found
[Prognostic factors in bronchopulmonary neoplasms].
No full textThe paper aims to illustrate the current state of knowledge regarding the prognostic factors of lung cancer. The disappointing results obtained using therapeutic modes (an overall 5-year survival rate of 15%), together with the considerable variability of the natural history of lung cancer, should be attributed to a group of prognostic factors, of varying importance, which can be subdivided into three categories: those concerning the characteristics of cancer, those inherent to the patient's conditions and those related to the type of operation. The paper underlines that histotype, TNM staging, the assessment of the nuclear degree and ploidy class play a correct and real prognostic role, and that only surgical treatment, if indicated, can offer a real life expectancy (40% 5-year survival rate in operated patients)
[Dysphagia associated with aorto-cardiac compression on the distal esophagus: a rare event but not exceptional in the elderly].
No full textAmong the pathologies responsible for dysphagia in the elderly, the aortic compression on the distal oesophagus awakens a certain clinical interest. Cipho-lordosis, which is often present in aged females, worsens the effects of this compression causing other kinkings on the oesophagus already hypokinetic because of the age (presbyoesophagus). This illness often shows scare symptoms, but sometimes requires a pneumatic dilation to allow normal food assumption of the patient. The authors report on their experience of two cases, clearly documented from the diagnostic point of view; the first one was given medical treatment, the second one was treated with a pneumatic dilatation of the cardias
[Reappearance of esophageal peristalsis after treatment of achalasia. Reality or artifact?].
No full textThe authors discuss the question of the reappearance of esophageal peristalsis following surgical or dilating treatment in patients with a diagnosis of cardiospasm. On the basis of their experience and an extensive review of the literature, the authors affirm that the reappearance of motor activity should not be attributed to a condition of pure achalasia but rather to an intermediate motor disorder with pseudo-achalasic characteristics which are difficult to discriminate
[Special problems in the surgical treatment of megaesophageal cardial achalasia. A clinical case].
No full textThe paper report the case of a patient brought to the Authors' attention suffering from megaesophageal cardial achalasia who had already undergone gastroduodenal resection according to BII. It was considered worthwhile to report this case due to the problems which arose concerning the choice of a thoracic rather than abdominal route owing to the impossibility of associating cardiomyotomy with anti-reflux plastica surgery because of the reduced dimensions of the stomach
[Current aspects and controversies in reconstructive surgery after esophagectomy: personal experience].
No full textThe authors report their series of 184 esophagectomies performed both for benign (44) and malignant (140) diseases. On the basis of their experience and supported by Literature data, it is believed restoration of digestive continuity offers two main points of discussion: choice of the intestinal tract for the interposition and type of anastomosis to perform. The nature of the lesion and its level seems to play the most important role in the choice
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
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