1,720,963 research outputs found
ACUTE MYOCARDIAL INFARCTION FROM PARADOXICAL EMBOLISM IN A CASE OF MASSIVE PULMONARY THROMBOEMBOLISM.
No full textFrom epithelial dysplasia to squamous carcinoma of the head and neck region: evolutive and prognostic histopathological markers
No full textKi67 immunoreactivity, p53 expression and apoptotic index were examined in 26 non-malignant lesions of the head and neck region, 22 dysplastic lesions of patients without evidence of head and neck carcinoma during follow-up time, 24 dysplastic lesions of patients who subsequently developed a squamous carcinoma in the same area, and 42 squamous cancer cases. A directly proportional relation between Ki67 immunoreactive pattern, apoptotic index and histological evolution from normal to dysplastic or neoplastic mucosa was evident. As far as p53 protein is concerned, its expression became higher and frequently transmural in neoplastic mucosa. A strict correlation between frequency and density of Ki67/p53 immunoreactivity according to invasive cell grading (ICG) scores and poor prognosis of patients were found. On the contrary, malignant cells highly expressing p53 seemed not to undergo apoptosis. Ki67 antigen and p53 protein detection in premalignant lesions and in carcinomas of the head and neck tract could be a useful marker for the management of patients at risk
Head and neck carcinomas: possible predictive role of some marker expression in carcinogenesis and in relation to the development of multiple primary tumors
No full textNeoplastic and borderline lesions of the prostate: autopsy study and epidemiological data
No full textOral mucosa cancer in Trieste (Italy): epidemiological appraisal by specific site of origin.
No full textEpidemiologia e storia naturale delle neoplasie maligne del distretto uroteliale nella provincia di Trieste
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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
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