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Alveolar variant of infiltrating lobular carcinoma of the breast with stromal steoclast-like giant cells
No full textAlveolar variant of infiltrating lobular carcinoma of the breast with stromal steoclast-like giant cells
No full textAlveolar variant of infiltrating lobular carcinoma of the breast with stromal steoclast-like giant cells
No full textPilomatrix carcinoma. A case report with immunohistochemical findings, flow cytometric comparison with benign pilomatrixoma and review of the literature
No full textWe report a case of pilomatrix carcinoma in a 42 year old woman. The patient presented a rapidly growing 4-cm subcutaneous mass in the right preauricular area. She was free of recurrence 24 months after surgery. Immunoreactivity was studied for cytokeratins, epithelial membrane antigen, S-100 protein, blood group antigens, Leu-M1, beta-2-microglobulin, vimentin, neuron-specific-enolase and cellular binding for peanut agglutinin. Squamous cells were reactive for cytokeratin AE1/3, epithelial membrane antigen, blood group antigens B and H, and peanut agglutinin. Basaloid cells were focally reactive for cytokeratin AE1/3 and epithelial membrane antigen. Flow cytometry revealed a euploid DNA content and a high proliferative rate of the pilomatrix carcinoma and in benign pilomatrixoma studied for comparison. The pathological diagnosis must be based on histomorphological criteria
Angiomatoid malignant fibrous histiocytoma: cytologic, immunohistochemical, ultrastructural, and flow cytometric study of 20 cases.
No full textTwenty examples of angiomatoid malignant fibrous histiocytoma (AMFH) were studied. Patients ranged in age from 3 mo to 42 yr, with a mean of 13.4 yr (median 10.5 yr). There were 12 males and eight females. Tumors occurred in the upper extremities in eight cases, lower extremities in 10 cases, and one case each in the buttock and neck. Five patients had local recurrence from 5 to 18 mo after initial surgery, and one patient developed regional lymph node metastases and eventually died of disease. Eight of nine patients with follow-up information were alive from 11 to 31 mo after the diagnosis. Preoperative fine needle aspiration cytology performed in two patients showed features that suggested the correct diagnosis. Ultrastructural and immunohistochemical studies demonstrated findings consistent with a fibroblastic-histiocytic nature of the neoplasm and failed to detect endothelial differentiation of the tumor cells. Flow cytometric analysis performed in six cases, including three recurrent tumors, revealed a DNA diploid pattern in all instances. AMFH appears to be a distinctive low grade sarcoma in the spectrum of malignant fibrous histiocytoma
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
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