1,720,975 research outputs found
Axillary Hibernoma in woman with Lobular breast cancer and MEN1 syndrome: A case report
No full textINTRODUCTION: The present study reports the case of an axillary hibernoma in a patient with lobular homolateral breast cancer and multiple endocrine neoplasia typel (MEN-1). Hibernoma is a rare benign adipose tissue tumor, and usually manifests as a slowly growing and painless rubbery mass. These tumors can arise in various sites, but mammary hibernomas remain extraordinarily uncommon. Although hibernomas are metabolically active and therefore "glucose-avid" on fluorodeoxyglucose CT-positron emission tomography (FDG CT-PET), imaging alone is inadequate in providing a reliable diagnosis and definitive differential diagnosis from other malignancy. Only complete surgical excision is diagnostic and, in most cases, curative.PRESENTATION OF CASE: A 42-years-old woman was followed for MEN-1 syndrome associating with hyperparathyroidism, insulinoma, non-secretory adrenal adenoma and thyroid lump. A FDG CT-PET found high glucid hypermetabolism in thickened elongated area on the front axillary line. Hibernoma was diagnosed after realization of prophylactic left mastectomy, homolateral sentinel lymph node biopsy and exeresis of the known axillary lesion.DISCUSSION: Clinical importance lies in distinguishing hibernoma from other benign and malignant breast neoplasms, as well as inflammatory conditions that come into the histologic or radiologic differential. Hibernoma is not currently classified as a non-endocrine tumor related to MEN1, but this association could be not fortuitous for the linkage between modification of Menin protein function and pathogenesis of hibernomas.CONCLUSION: Our case deserves extraordinary attention because, not only it's a case of MEN1 syndrome associated with hibernoma, but in the context of this lesion there are multiple micro-foci of infiltrating lobular carcinoma. (C) 2020 Published by Elsevier Ltd on behalf of IJS Publishing Group Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Breast cancer and neoadjuvant chemotherapy: indications for and limits of breast-conserving surgery
No full textAIM: The aim of our study was to determine how many and what subtypes of breast cancer could be treated with breast-conserving surgery after NACT. Another outcome was to determine the applicability of MD Anderson Cancer Center nomogram to predict it. MATERIAL OF STUDY: We reviewed the histological examinations of 86 performed mastectomies according to the indications to BCS after NACT. For 73 cases, collected all the necessary data, we could use the nomogram available on the MDACC website to calculate the probability of BCS and pCR. RESULTS: In our experience the BCS rate would increase by 34,1%, from 3,7% to 3.,8%. Patients with Triple Negative and HER2+, ER- more than ER+, show higher rates of pCR and BCS. The MDACC nomogram predicts accurately the probability of pCR and BCS after NACT in HER2 negative cancers but not in HER2 positive ones treated with Trastuzumab. This suggests that a specific nomogram for HER2 positive carcinomas has to be developed. CONCLUSION: BCS after NACT is feasible and safe in terms of LRR, DFS and OS, if patients are properly studied and selected. Indication to BCS after NACT needs of a multidisciplinary assessment considering clinical staging, biological characteristics, the radiological response pattern and the expected concordance between imaging and histology
Breast cancer and gastrointestinal metastasis. A case report and review of the literature
No full textIntroduction: Invasive lobular cancer (ILC) is the second most common type of a heterogeneous group of different histological types of invasive breast carcinoma. Breast cancer can metastatize anywhere, the most common sites are bones, liver, lungs and brain. Gastrointestinal tract (GI) metastases observed in autopsy studies account for about 6% to 18% of the overall metastases from breast cancer. Objective: We describe a 54-year old woman with recurrent ILC in the contralateral breast. She underwent right mastectomy 16 years before. After symptomatic presentation a duodenal invasion was found and subjected to diagnostic scrutiny (FDG PET/CT, diagnostic CT, MR, EGDS). In particular, we analyse if FDG PET/CT is enough accurate in the restaging of the patient. A review of our database and of the literature of similar cases were made. Results: In this patient CT and RM were suspicious for a slow developing process of the duodenum but FDG PET/CT did not show pathological uptake in the affected duodenal tract. A highly intense focus was described in a cervical lymph node, that there isn't metastatic lesion, whereas the recurrent breast lesion had only slight increased glycolytic activity. CONCLUSION: Metastatic lobular carcinoma of the breast is a rare entity with a heterogeneous range of clinical presentations. Detection of eventual gastrointestinal metastases are complicated to assess. ILC has various scale of glycolytic activity both in the primary lesion as well in the metastatic foci. When the level of suspicion is high and there is no uptake of FDG, further investigations are necessary
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
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