1,720,971 research outputs found
Bladder papilloma in a 12-year-old girl.
No full textTransitional cell papilloma of the bladder in childhood is exceedingly rare, with less than 140 cases reported. A 12 years-old girl with microhaematuria without any other urinary or systemic symptom showed at US scan an endovesical structure, 20 x 20 x 13 mm, located in the right posterolateral aspect of the bladder, turned out to be at biopsy a bladder papilloma grade 0. Endoscopic removal of the papilloma together with its implantation area was performed. Follow-up negative at > 2 yrs from diagnosis. Our patient’s mother is a house worker dealing with volatile shoe adhesives, to which the girl has been exposed since birth: a relationship to this fact seems highly probable. Epithelial bladder tumours in children usually behave as benign tumours and do not relapse, therefore not justifying, in our opinion, the need of a formal partial cistectomy but allowing a more conservative approach such as endoscopic removal
Molecular biology, basic research and diagnosis of Hirschsprung's disease.
No full textDas RET-Proto-Onkogen ist das zentrale für die Entstehung eines M. Hirschsprung verantwortliche Gen, wobei RET-Mutationen auch bei anderen pathologischen Läsionen vorkommen. Bei Hirschsprung-Patienten konnten eine Reihe verschiedener RET-Mutationen festgestellt werden. Besondere Aufmerksamkeit sollte denjenigen Patienten gewidmet werden, die Mutationen der Exone für die entscheidenden Zysteinreste aufweisen, welche für MEN2A prädisponieren. Bei diesen Patienten kann der M. Hirschsprung selten mit der Entwicklung neuroendokriner Tumoren, wie mit einem medullären Schilddrüsenkarzinom oder einer MEN2A assoziiert sein. Daher ist eine prophylaktische Thyreoidektomie dann ratsam, wenn eine tumorassoziierte RET-Mutation gefunden wurde. In MEN2A/Hirschsprung-Familien können die RET-Mutationsanalyse, Tumor-Screening und ggf. eine prohylaktische Thyreoidektomie wie bei MEN2A empfohlen werden. Der multigenetische Ursprung des M. Hirschsprung in Abwesenheit einer spezifischen Standard-Hirschsprung-Mutation macht eine genetische Routinediagnostik unmöglich
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Robotic-assisted surgery for excision of an enlarged prostatic utricle
Full text linkAbstractIntroductionProstatic utricle is a rare malformation arising from incomplete regression of the Müllerian ducts. Diagnosis is easily made but management may be challenging. The minimally invasive approach has so far been considered the gold standard for surgical treatment. Many endoscopic and surgical procedures have been described for removal, but to date only few cases of robot-assisted procedures have been mentioned in the literature and there are no reports of redos.Presentation of the caseWe report the case of a giant prostatic utricle cyst successfully treated with robotic-assisted surgery two years after an unsuccessful first attempt at laparoscopic excision. No relapse was found at one year follow up.DiscussionWe were able to excise a retro-vescical structure in spite of adhesions caused by the previous surgery and the very large size of the diverticulum thanks to the high magnification and 3-D visualization available in robotic assisted laparoscopy.ConclusionRobot assisted laparoscopy should be considered an advantageous technique for the treatment of prostatic utricle
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