544 research outputs found
TREATMENT OF "LOCALLY ADVANCES" WELL-DIFFERENTIATED THYROID CARCINOMA.
No full textTreatment of "locally advanced" well-differentiated thyroid carcinomas.
Falvo L, Catania A, Grilli P, Di Matteo FM, De Antoni E.
SourceDepartment of Surgical Sciences, 3rd training program in General Surgery, University of Rome La Sapienza, Italy. [email protected]
Abstract
PURPOSE: To analyse thyroid carcinomas having an extrathyroid extension in order to identify the principal prognostic factors and outline an effective therapeutic strategy.
METHODS: We selected a sample of 160 patients suffering from locally advanced "well differentiated thyroid carcinoma (T4) who had undergone surgery at the Department of Surgery of University of Rome "La Sapienza". The sample was subdivided into three groups: T4, limited type I, and extensive type II, T4 microcarcinomas.
RESULTS: We obtained excellent results with the T4 microcarcinomas, above all in patients under the age of 45, with a 94.5% survival rate, compared with 88% in patients aged over 45. In the extensive type II T4 carcinoma we obtained a survival rate of 29.4% in patients aged over 45 years.
CONCLUSIONS: Age, combined with an aggressive histological variant (Sclerosing and tall-cell papillary carcinoma), is an important factor in prognosis. The radicality of surgical excision is considered an important prognostic factor, although the results reported in the literature are contradictory. Aggressive surgery can free from the disease a high percentage of patients over the age of 50 even with T4. We deem it fundamental to perform total thyroidectomy in all advanced cases of thyroid neoplasm and to extend neoplasm excision to the adjacent tissues, even involving justified surgical demolition.
PMID: 15283382 [PubMed - indexed for MEDLINE
I libri che i bambini non dimenticano
No full textUn'indagine sulla fascinazione - trascurata in ambito critico, ma evidentemente potente - della prime letture d'infanzia, veicolata dall'analisi del volume 'La prateria degli asfodeli', di Antonio Faeti, che si occupa in maniera pionieristica proprio di questo argomento
Clive Gabay. Imagining Africa: Whiteness and the Western Gaze. Cambridge: Cambridge University Press, 2018. xi + 270 pp. List of figures. List of tables. References. Index. $105.00. Hardcover. ISBN: 978-1108473606
No full textClive Gabay’s Imagining Africa: Whiteness and the Western Gaze has more to do with post-colonial studies, critical race theory, and Whiteness studies than with African studies. Gabay’s concern is not the continent per se, but rather the history of idealised visions of Africa in the West, informed by the growing anxiety of Whiteness in perpetuating its mythologized genius. In his introduction (9–22), Gabay posits a distinction between “whiteness” (which defines the status of phenotypical white people) and “Whiteness” (which is seen as a system of privilege involving both white and non-white peoples in safeguarding White and Western genius). The author aims at overturning the conventional post-colonial critique of western imaginaries of Africa “by problematising the sense in which the former consistently holds the latter in inferior relation to it” (4)
Spagna tuttifrutti. Dalla morte di Franco al golpe dell'81
No full textAntologia di scritti di diversi autori intorno alla realtà della transizione democratica della Spagna dopo la fine della Dittatura franchistaAntology of texts of different author about the reality of democratic transition of Spain after the end of Francois
Literaturas ibéricas, literaturas comparadas
No full textSi studia il contributo decisivo di Claudio Guillén alla riformulazione degli ambiti della comparatistica con la valorizzazione delle letterature iberiche catalana, castigliana e portoghese e di quelle iberoamericaneA study of Claudio Guillén and his outstanding contribution to the reformulation of the comparative studies and the development of iberian, catalan, castilian, portuguese and ibero-american literatur
Tommy, i' vorrei che tu, Antonio ed io
No full textUn'analisi dell'opera dello scrittore di avventura per ragazzi Mino Milani
Comparison of Constitutive Laws for Modeling High-Temperature Superconductors
No full textThis paper investigates the conditions of use and the equivalence of various constitutive laws used to model the electromagnetic behavior of high-temperature superconductors: two versions of the critical state model (CSM), the power law model, and a so-called percolation model. All these models can be used to represent the same superconducting material with some limit of accuracy. The CSM and the power law model are well known in the literature. The percolation model can be seen as a generalization of the power law model that includes also a CSM-like behavior at very low electric fields. The investigation has been carried out for three types of operating conditions: the sudden application of a dc excitation, a pure ac excitation, and combined dc and ac excitations. The equivalence between the different constitutive laws is shown to be a function of the magnitude of the electric fields and of the time scales involved. In the dc case, long time scales and very small electric fields are predominant; thus, the superconductor requires a model that is accurate at low electric fields, such as the percolation model. The losses then arise from the relaxation of the magnetic field in the sample. In the ac case, the power law and percolation models are nearly identical when considering power frequencies, so choosing the simpler power law model is fully acceptable in practice. In addition, the CSM coincidentally provides good predictions of the losses in the power frequency range. In the dc+ac case, when time scales in the range of minutes to hours are considered, it is shown that ac losses dominate over relaxation losses, and the same conclusions as for the ac case apply
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