1,720,986 research outputs found
Re: hemangiopericytoma of the greater omentum: a potential imaging pitfall and cause of repeatedly unsuccessful angiographic embolization
No full textWe commend Kulkarni et al. (1) on their description of a rare case of aberrant splenic artery aneurysm treated with a combination of stent graft and coil embolization. Indeed, aneurysm of splenic artery is a protean disease as for the origin, location, size and clinical manifestations. Furthermore, what appears to be initially a splenic aneurysm can exceptionally turn out to be another vascular lesion as happened to us.
In fact, a 74-year-old man with a history of prostate cancer was recently diagnosed as having an aneurysm of 1.7 × 2 cm arising from a short gastric artery on a surveillance CT scan (Fig. 1). Superselective arteriography confirmed the aneurysmatic nature of the lesion (Fig. 2): transcatheter angiographic embolization was attempted twice but failed. At this point, the patient was referred for surgical repair: at laparoscopy, a brown, well-encapsulated, hypervascular lesion was observed in the greater omentum on the left side of the stomach and excised after ligation of its feeding pedicle. Histological and immunochemical features revealed benign hemangiopericytoma of the greater omentum (no mitosis or necrosis along with an immunoprofile positive for CD34 and bcl-2). At 14-month follow-up, the patient appears free from recurrent disease
Su un caso di cisti di echinococco a estrinsecazione endobronchiale
No full textGli autori descrivono un caso di echinococco ad estrinsecazione endobronchiale che è stato risolto mediante l'utilizzazione del broncoscopio rigido, sia dal punto di vista diagnostico che terapeutico
Approccio diagnostico per l’echinococcosi epatica del VII segmento
No full textE’ giunto all’osservazione degli autori il caso di una paziente affetta da una voluminosa cisti da echinococco a carico del 7° segmento epatico. L‘approccio diagnostico tradizionale alla malattia si 6 dimostrato assolutamente insufficiente a dirimere i dubbi. Una ecografia epatica ha fornito l’esatta diagnosi della malattia; la TC ha permesso di confermare la diagnosi ed ha fornito ampie informazioni sulla localizzazione, sulle dimensioni e sui rapporti anatomici della lesione, facilitando la scelta di una corretta via di accesso per I’intervento risolutore.The Authors have examinated the case of a female patient affected with a large hydatid cyst of the 7th segment of the liver. The traditional diagnostic approach
to the disease was absolutely insufficient to remove all doubts. An hepatic echography gave the exact diagnosis of the disease; the C.T. confirmed the diagnosis
and gave detailed informations of its location, the size and the choice of approaching for the resolutive surgery
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
Considerazioni sul testicolo ritenuto: complicanze tumorali
No full textStudio retrospettivo di 60 pazienti con cancro del testicolo e studio della correlazione tra l'insorgenza della neoplasia e criptorchidismo
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