1,720,961 research outputs found
Induction of ovulation and risk of ovarian tumors
No full textIn the last years it has been observed a more and more increasing number of women submitted to therapies for induction of ovulation (disorders of the ovulation represent 33% of the causes of female infertility). In 1998, these therapies had been administrated to approximately two million of USA women. Various Authors have assumed a possible relationship between induction of ovulation and ovarian tumors. Between 1982 and 1997, at least 43 cases of ovarian tumors have been published (among these, there were also 25 cases of epithelial tumors) occurring in women previously treated with ovulation induction. The mean age of patient was 30.3 years, approximately 20 years younger than normal patient population for the same tumors. Among the possible causes of epithelial ovarian tumors, there is the trauma of the ovary surface caused by the continuous repeating of the ovulation phenomenon (incessant ovulation). Gynecologist should be aware of this potential risk for their patients. Multicentric studies should be evaluated in order to establish the risk of ovarian cancer in women treated for infertility problems. A survey of the international literature is made in order to analyse the epidemiological studies and to discuss the relationship between ovulation inducing agents and ovarian tumors
Postchemotherapy late recurrence of nonmetastatic gestational trophoblastic disease following a partial mole. A case report
No full textThe authors describe a case of a 35-year-old woman who showed elevation of betahCG 13 months after the complete regression of betahCG values following chemotherapy for an incomplete mole. This case outlines the necessity for careful monitoring of betahCG levels in low risk gestational trophoblastic diseases for a period of time longer than one year after achieving the first clinical remission
Fatal phaeochromocytoma in pregnancy. Case report
No full textA case of phaeochromocytoma in pregnancy is reported. In this case, the tumour, without any symptoms during pregnancy, remained undiagnosed. A severe iachycardia occurred during cesarean section; successively, the woman developed pulmonary oedema. The woman died of cardio-respiratory failure, four days after the onset of the arrhythmia. The diagnosis of phaeochromocytoma was made only at autopsy
L’ecografia bidimensionale (2D) e tridimensionale (3D) nello screening della patologia endometriale in menopausa
No full textPregnancy-associated breast cancer
No full textPregnancy-associated breast cancer, which is defined as all breast cancer diagnosed during pregnancy or within the following year, is a relatively rare finding. Due to the particular difficulties in the diagnosis of breast cancer during this period, pregnant women tend to present more advanced disease at diagnosis. Four cases of pregnancy-associated breast cancer referred to our Institute are described as a contribution to the knowledge of this diseas
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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