1,721,099 research outputs found
Prognostic factors in neuroendocrine small cell cervical carcinoma - A multivariate analysis
No full textBACKGROUND. The purpose of this study was to evaluate the clinical and pathologic factors associated with survival in patients with neuroendocrine (NE) cervical carcinoma. METHODS. All patients with NE cervical carcinoma diagnosed between 1979-2001 were identified from tumor registry databases at two hospitals. Data were collected from hospital charts, office records, and tumor registry files. The impact of clinical and pathologic risk factors on the survival of patients with small cell NE carcinoma of the cervix was evaluated using Kaplan-Meier life table analyses and log-rank tests. The independent prognostic factors found to be predictive of survival in univariate analysis were evaluated using Cox regression. All tests were two-tailed with P values 2 cm (P 0.02), margin involvement (P = 0.016), pure versus a mixed histologic pattern (P 0.04), margin status (P = 0.016), and smoking (P = 0.04) were considered poor prognostic factors. In multivariate analysis, smoking for early-stage patients and stage of disease in the overall population remained as independent prognostic factors of survival. CONCLUSIONS. Smoking and advanced stage are reported to be poor prognostic factors for survival in patients with NE small cell carcinoma of the cervix. Only those with early lesions amenable to extirpation are cured. The role of primary or postoperative radiation with or without chemotherapy is unclear and yields uniformly poor results, particularly in patients with advanced lesions. Clinical trials are needed. Cancer 2003;97:568-74. (C) 2003 American Cancer Society
Oral altretamine used as salvage therapy in recurrent ovarian cancer
No full textBackground. Altretamine has reported efficacy in the treatment of recurrent ovarian cancer following platinum-based therapy. This report presents the cases of two long-term survivors with recurrent ovarian cancer given oral altretamine. Cases. Two patients diagnosed with stage IIIC ovarian cancer underwent optimal cytoreductive surgery. Both women were subsequently treated with platinum-based chemotherapy. One had persistent cancer documented 2 months post therapy, while the other was disease-free for 22 months before recurring. Both received altretamine in a salvage setting. Each of these women achieved a prolonged response to third-line altretamine therapy, and one of whom was disease-free for 4 years and the other remains disease-free over 7 years following initiation of salvage therapy. Conclusion. Outpatient-administered oral altretamine can provide a prolonged disease-free interval with minimal toxicity. (C) 2003 Elsevier Inc. All rights reserved
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
Prognostic factors responsible for survival in sex cord stromal tumors of the ovary - A multivariate analysis
No full textObjective. To evaluate prognostic factors that impacts the survival of women with sex cord stromal tumors of the ovary (SCST). Methods. Cases were identified from tumor registry databases at three academic institutions between 1975 and 2003. Patient characteristics, surgical treatment, adjuvant therapy, pathologic and follow-up information were collected from hospital charts and clinic records. Kaplan-Meier and Cox proportional hazards analyses were used to identify predictors of outcome. Results. Eighty-three women (median age: 49 years) with SCST of the ovary, including 73 with granulosa and 10 with Sertoli-Leydig cell tumors were identified. Fifty-one were stage I, 8 stage II, 10 stage III, 3 stage IV, and 11 patients were unstaged. The median and 5-year disease-specific survival of women with stage I-II vs. III-IV was 180 months and 85% compared to 58 months and 48%, respectively (P = 0.012). Furthermore, age <50 (P = 0.003), premenopausal status (P = 0.013), tumor size <10 cm (P = 0.003), lack of lymph node invasion (P < 0.0005), and absence of residual disease (P = 0.002) were all significant predictors for improved survival. Of the patients who received adjuvant treatment, chemotherapy did not impact survival (P = 0.11). Twelve of 51 stage I patients underwent fertility-sparing surgery with three recurrences. In multivariate analysis, age <50, smaller tumor size, and absence of residual disease remained as independent prognostic factors. The median follow up was 58 months (range: 1-310). Conclusions. Age <50, smaller tumor size, and absence of residual disease are important predictors for improved survival in patients with SCST of the ovary. (C) 2004 Elsevier Inc. All rights reserved
The significance of molecular markers in the survival of younger women with advanced ovarian cancer
No full textDifferences in prognostic molecular markers between women over and under 45 years of age with advanced ovarian cancer
No full textPurpose: The purpose of this study was to determine whether differences in molecular markers might explain the better prognosis of women less than or equal to45 years of age versus women >45 years of age diagnosed with ovarian cancers. Experimental Design: Tissue sections from women with stage III-IV ovarian cancers were examined for expression of CD34, p53, and HER2. The Kaplan-Meier method and Cox Proportional Hazard analyses were used to identify predictors for outcome. Results: Fifty-two women less than or equal to45 years of age were matched with 52 women who were >45 years old. Of the 44 available tissue sections, 24 were from the younger age group (mean age, 41 years), and 22 were from the older age group (mean age, 61 years). Based on CD34 expression, tumors from women >45 years of age had lower microvessel density (MVD) compared with tumors of younger women (10.3 versus 16.1 microvessels per x 400 field; P = 0.03). Lower MVD (less than or equal to11 microvessels per x 400 field) predicted for a worse prognosis than higher MVD (>11 microvessels per x 400 field) in the overall study group (P = 0.001) and within the older subgroup (P = 0.03). The expressions of p53 (P = 0.13) and HER2 (P = 0.49) did not vary between the two age groups. The median survivals of those with tumors that overexpressed p53 and HER2 were 28.6 and 23.9 months compared with 51.7 and 38.6 months in those with cancers that underexpressed these markers, respectively (P = 0.09 for p53, P = 0.15 for HER2). Conclusions: Ovarian cancers in women >45 years of age had lower MVD compared with those in women less than or equal to45 years of age. Lower MVD was an independent prognostic factor for decreased survival. Lower frequency of neovascularization in these cancers may contribute to the decreased survival observed in women >45 years of age
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