1,720,960 research outputs found
Serum and Cyst Fluid Tumor Marker Levels in the Differential Diagnosis of Benign Ovarian Cysts
No full textSerum and cystic fluid levels of CA 125, CA 19.9, carcinoembryonic antigen (CEA), and alpha-fetoprotein (AFP) were assayed in 74 consecutive women of median age 30 years (range 15 to 74 years) undergoing surgery for adnexal cysts of presumed benign nature. Median (range) serum levels of CA 125, CA 19.9, CEA and AFP were 46.5 IU/ml (4.3-406), 28.5 IU/ml (1-96.3), 1.4 ng/ml (0.5-3.5) and 2.4 ng/ml (1-9.9) in 44 endometriotic cysts; 22.5 (4.7-82), 4.9 (1-226),1.3 (0.7-4.8) and 4 (0.5-10.5) in 11 dermoid cysts, 14 (8.6-25.1), 3.2 (1-6), 1 (0.3-2.8) and 3.7 (1.9-6) in 9 mucinous cysts, and 6.9 (0.5-104), 18 (1-132), 0.8 (0.1-1.9) and 2.1(1-5.4) in 10 cases with mixed histotypes. Corresponding cystic fluid levels were 342,864 (1,418-3,404,682), 228,000 (117-2,500,000), 106 (0.5-2,908) and 1.3 (0.4-51) in endometriomas; 843,895 (10,842-1,676,948), 740,039 (77-1,280,000), 470 (61-880) and 2.5 (1-4) in dermoids; 3,485 (27.2-149,804), 9,007 (36.4-153,475), 1,631 (402-11,096) and 1 (0.5-2.5) in mucinous cysts, and 13,068 (5,300-43,767), 412 (1-142,700), 0.8 (0.4-5.3) and 2.3 (1-4) in the mixed histotype group. No significant between group differences were detected in serum marker levels. Patients in the mucinous cyst group had significantly lower CA 125 cystic fluid levels compared with women with endometriomas and dermoids (P<0.05). Fluid aspirate tumor marker measurements did not aid in the differential diagnosis of benign ovarian cysts, mainly due to the extremely wide scattering of values
The value of cyst puncture in the differential diagnosis of benign ovarian tumours
No full textA prospective collection of serum samples and ovarian cyst fluid was used to assess the use of different tumour markers and cyst fluid cytology in combination with serum tumour markers for the differential diagnosis of benign ovarian cysts. A consecutive series of 108 women of median age 30 years (range 15-75) undergoing laparotomy or operative laparoscopy for presumedly benign ovarian cyst(s) were studied at a teaching hospital at the University of Milan, Italy. The main outcome measures were tumour markers CA 125, CA 19.9 and carcino-embryonic antigen (CEA) in serum and ovarian cyst fluid, oestradiol and progesterone concentrations in cyst fluid, and cytology of the sediment. The studied cysts were endometriotic (55 subjects), dermoid (16), mucinous (12), serous (10) or of miscellaneous histotype (15, including four follicular and one luteal). Serum CA 125 concentrations were significantly higher in the endometrioma patients than in the other groups. The sensitivity of CA 125 in the differentiation of endometriomas from other adnexal tumours was 61.8% and the specificity 94.3%; combining CA 125 and CA 19.9 assays yielded a sensitivity of 83.6% and specificity of 62.3%. Cyst fluid tumour markers values were extremely scattered with ample overlap between different cyst types. Oestradiol and progesterone concentrations were similar in the histological subgroups. Cyst fluid cytology was non-specific. We concluded that the aspiration of fluid from presumedly benign ovarian cysts appears to contribute little to the differential diagnosis of various tumours. The use of combining serum CA 125 and CA 19.9 assays in the diagnosis of endometriomas needs further confirmation
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
Use of the concomitant serum dosage of CA 125, CA 19-9 and interleukin-6 to detect the presence of endometriosis : Results from a series of reproductive age women undergoing laparoscopic surgery for benign gynaecological conditions
No full textBackground: Recent studies have proposed the measurement of CA 19-9 and IL-6 as an alternative to CA 125 as markers for endometriosis. This study was performed in order to verify the clinical value of serum CA 125, CA 19-9 and IL-6 levels, either by themselves or combined, in the detection of the disease. Methods: In a prospective cohort study, serum concentrations of CA 125, CA 19-9 and IL-6 were measured in a consecutive series of 80 women of reproductive age who underwent laparoscopy for benign gynaecological pathologies. Results: Endometriosis was documented in 45 women (stage I-II in 14 cases and stage III-IV in 31 cases). Patients with endometriosis had significantly higher levels of CA 125 than controls [23.4 IU/ml (13.3-37.6) versus 11.4 IU/ml (9.1-18.5), P < 0.001)]. Conversely, women with and without the disease were shown to have similar levels of both IL-6 pg/ml [0.6 (undetectable-1.4) versus 1.0 pg/ml (0.4-1.9), P = 0.09] and CA 19-9 [9.8 IU/ml (4.5-20.8) versus 7.4 IU/ml (2.8-11.5), P = 0.11]. The area under the receiver operating characteristics curve resulted in a statistically significant difference from the null hypothesis only for CA 125 (P < 0.001). Sensitivity and specificity of CA 125 were 27 and 97% respectively and were higher than those related to CA 19-9 and IL-6. Concomitant use of the three dosages led to a sensitivity and a specificity of 42 and 71% respectively. Conclusions: The concomitant dosage of CA 125, CA 19-9 and IL-6 does not add significant information in respect to the CA 125 test alone in diagnosing either early or advanced stages of endometriosis
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
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