1,721,059 research outputs found

    Sentinel node of endometrial cancer after hysteroscopic injection

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    Objectives: The aims of our study were to evaluate the possibility of identifying the sentinel lymph node (SLN) in patients with endometrial cancer (EC) and to directly compare two injection techniques, cervical and hysteroscopic injection. Methods: Fifty-four patients with endometrial carcinoma, clinical stages I and II, were submitted to complete surgical staging through laparoscopy, as recommended by FIGO in 1988. For the mapping procedure the patients were divided into two groups of injection: the cervical injection group and hysteroscopic injection group. Technetium (Tc) 99m radiocolloid was used as tracer. Results: Intraoperative detection rate of SLN was 70% in cervical group and 65% in the hysteroscopic group (p=n.s.). In the cervical group, all patients had SLN in the pelvis only and the mean SLN removed was 18 (range 2-26). In the hysteroscopic group, all patients had SNLs in the pelvis and two patients had SLN both in the pelvis and above the bifurcation of the aorta. Mean pelvic SLN removed was 20 (range 8-42). Conclusions: Our data shows that it is possible to identify the SLN in tumours of the endometrium. Both cervical and hysteroscopic techniques are feasible but the hysteroscopic procedure might represent the only method able to highlight the complete lymphatic drainage of the uterus as suggested by the presence of paraaortic positive SLN only in this group

    Three-dimensional sonograph of a monochorionic diamniotic triplet pregnancy

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    A monochorionic diamniotic triplet pregnancy was diagnosed by sonographic scan at 9 weeks of gestation. The three embryos appeared to share the same trophoblast, with two of them sharing the same amniotic sac. The two amniotic sacs were divided by a thin membrane, with no chorionic projection within it, and each amniotic sac presented a single yolk sac. Only few cases of nontrichorionic-triamniotic triplets have been reported in the literature. Although the diagnosis was reached using the two-dimensional ultrasound, the complementary use of three-dimensional ultrasound helped in confirming the diagnosis, and in offering the couple an adequate counseling

    Ginecologia e Ostetricia

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    Testo elaborato come strumento di studio per gli studenti di medicina sugli argomenti che possono interessare il medico di medicina generale per inquadrare la salute della donna. La prima parte si concentra sul percorso riproduttivo-ginecologico, attraversando le varie età (pubertà, vita fertile e menopausa) e concentrando poi l'attenzione sull'oncologia ginecologica ( cervice endometrio, ovaio e vulva). La seconda parte del testo è dedicata sulla donna gravida ed alle conoscenze che il medico di medicina generale deve avere sempre presenti

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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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