1,720,965 research outputs found
Paralisi Del Facciale E Granulomatosi Di Wegener
No full textvegener's Granu/o,tatosis is a nu.tltisystenticpathorogy characterizecl
by a uecrosing uasculitis and the deuelopmint of n granutoiíotoit irtioi
. ,otologic nrarifestation is a contntòn ctinicat findng. In this pape:r, tbe
Arthors report an obserued case ulsere tbe ftrst ,y,aptoà oTWr:gLi';r,i Cro
nztlomatosis tuas cbaracterìzed by facial ntirc pnity,'on extíerzer'y ,or, ,linical
finding in this disease
Petrous bone cholesteatoma and facial paralysis
Full text linkThis paper describes a series of patients with a petrous temporal bone cholesteatoma paying particular attention to the complications and their management. Sixteen patients who underwent surgery in our department were reviewed. Topographically, the petrous bone choleasteatomas were grouped into five categories according to the classification proposed by Sanna et al. There were five massive labyrinthine; five infralabyrinthine; one apical, four supralabyrinthine; and one infralabyrinthine-apical. Clinically, the presenting symptom of these lesions were facial nerve paralysis (10 patients) and unilateral deafness (13 patients). Total removal of the cholesteatomas was achieved in all patients using different surgical approaches according to their site and extent. Recurrences were observed in two patients after 8 months and 24 months, respectively. The facial nerve was infiltrated and compressed by the cholesteatoma in eight patients. Seven were managed with cable grafts using sural nerve. One of these patients was treated using a facial-hypoglossal anastomosis because of the failure of the graft. In the remaining patient, a baby-sitter procedure was employed. In the other two patients, the preoperative facial paralysis was due to compression by the cholesteatoma, and its removal allowed partial recovery of facial function. The rationale of the surgical management of petrous bone cholesteatoma is its radical and total removal. Our present policy is to prefer approaches which result in a closed cavity obliterating the eustachian tube and closing the auditory canal as a blind sac. Facial nerve function is the main complication of these lesions. Facial nerve involvement requires rapid management because the duration of the paralysis is directly related to poor recovery of facial function
Osteomielite Della Base Cranica Ad Esordio Ed Evoluzione Atipica
No full textSkull base osteotnyelitis arises as a contplication of the malignant external
otitis, buf it can be due to ruiddle ear and/or mastoid infection. Otber
etiologl, can be represented by infeaion of tbe paranasal sinuses and of the
mandible.
Generaly, osteornyelitis inuolues elderly patíents affected by díabetes,
iw m un o defici en cy or m i uou a s cular di s ea s e.
Three new cases of skull base osleonzyelitis whit atypical onset and euolution
are reported. The dif/iculties regarding the diagnosis and the nr6nagement
are discusse
NEURINOMA DELLA CORDA TIMPANICA
No full textThe nunzber of facial nerue nelrroîltas reported in the literature exceed
more than 300.
The employentenÍ of CT and RMI baue aided tbe diagnosis and ddferentíal
dîagnosís, bttt ntany aspects rematn controuersial, partiutlary tbe origin of
this Íttruor.
It bas been dentonstrated that, in only one of the considered cases, tbe
neuron'la originate frotn the neruus interrnedius and ìn fiue, from the chorda
tytnpani.
A new case of chorda tytnpani neurinoma is reported and discussed diagnostic
and terapeutíc problerus regarding this rare tumor
Colesteatoma Esterno E Fibrodisplasia Dell'osso Temporale
No full textCbolesteatonta is a disease that inuolues altnost exclusiuely tbe middle
ear slrtrctures and tbe tnastoid bone; in rare cases inuolues the external auditory
canal.
Tbe Attthors report a rare case of a patient a/fected by external e(ir crtnal
cbolesteatoma associated witb fíbrous dysplasia of th:e teruporal bone,
Tbe problems related to the pathogenesis and diagnosis of this disease are díscussed
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
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