1,720,959 research outputs found
Biomaterial implantation in facial esthetic diseases: Ultrasonography monitor follow-up
No full textFacial deficit diseases are corrected by biomaterial implantation. The ideal biomaterial should be easy to implant and remove and simple to be identified by a low-dose radiation and low-cost radiologic technique. The purpose of this work was to evaluate ultrasonography (US) as a technique in monitoring biomaterial status after operation. In the last 3 years, for this study we used polyethylene porosus and polyacrylamide. Our study included 300 patients grouped accordingly as follows: malformative syndromes, degenerative syndromes, and esthetic problems, results of skull-facial traumas, and whether they are treated in the early phase and or the late phase. In this paper, we describe the better 15 clinical cases for their excellent result and for their variety of US images. Ultrasonography has been shown as an excellent way to visualize clinical features and a possible pathologic process of an implanted biomaterial; it is a noninvasive, low-radiation and low-cost dose radiologic technique. Reconstruction in facial deficit diseases needs adequate biomaterial to implant and a careful patients observation, that is, both clinical and radiologic. Ultrasonography is a fundamental component of the follow up of implanted biomaterial patients
Reconstruction of an acquired subtotal ear defect with autogenous septal cartilage graft.
No full textI.F.1,87
Scoliosis of the cranial base: radiological and mathematical analysis using finite elements system analysis (FESA) of a case.
No full textIntroduction and proposed study: Numerous deforming syndromes of the craniofacial complex involve also the symmetry of the cranial base. This study considers a particular alteration, that of 'scoliosis', in which the line Nasion-Sella-Basion-Inion is not rectilinear but curved, due to a torsion of the cranial base in the horizontal plane. Materials: Plagiocephaly was studied in one patient, which was probably caused by altered timing or mechanism of closure of the cranial sutures. Methods: This study was carried out using CT images of the patient's craniofacial complex, using standard neuroradiological points. In order to study the forces that operated in the various complexes, a mathematical analysis was applied namely, a finite element system analysis (FESA). Results: From this mathematical study, which has enabled us to evaluate the forces that operate in determining the deformity, it has been possible to locate two sites of force concentration. They were located at different levels and on opposite sides. Conclusion: This finding could explain why the middle and lower thirds of the face were also involved. © 2004 European Association for Cranial-Maxillofacial Surgery
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
Nevus sebaceus of Jadassohn
No full textThe nevus sebaceus of Jadassohn (SNJ) is a hamartomatous disorder of the skin and its adnexa pertaining to the group of "organoid nevi," most frequently involving the face and scalp. During adulthood, patients with SNJ have a 10% to 20% risk of the development of cutaneous or adnexal neoplasia, so that prophylactic excision before puberty is recommended by most authors, and tissue expansion is considered to be the best method of reconstruction. It has been largely demonstrated in literature that most of the lesions that have been interpreted as basal cell carcinoma (BCC) are actually examples of primitive follicular induction or trichoblastomas, not authentic BCCs. A literature review on histopathologic findings associated with SNJ and a retrospective chart review of two cases occurring in young females are presented. In one case, the lesion was treated by intraoperative expander-assisted reduction and scalp graft (Case 1); in the other one, a primary closure with adjacent tissue was performed (Case 2). No signs of malignant degeneration or residual pathology have been found. For treatment of the biggest lesions, when preoperative tissue expansion cannot be performed, intraoperative one, transfer of a scalp graft has been shown to be a good reconstructive method. For the smallest lesions, a primary closure with adjacent tissue is sufficient
The rare condition of maxillary osteomyelitis
No full textOsteomyelitis is an acute or chronic inflammatory process that can involve cortical and trabecular aspects of bone or bone marrow. Cranial bones are infrequently involved, but spreading of inflammation with involvement of surrounding structures represent important risk, as are cerebral abscess, encephalitis, or men ingitis. We present a case of osteomyelitis of right maxillary sinus in an adult caused by a spreading of contiguous inflammation sustained by a chronic intrasinusal polyp; the complete resolution of infection was gained with a combination of surgical treatment and antibiotic therapy. The aims of this article are to illustrate diagnostic patterns and surgical treatment experienced in a case of maxillary osteomyelitis and to report radiographic and histopathologic findings
Brain abscess by mycotic and bacterial infection in a diabetic patient: Clinical report and review of literature
No full textThis report presents a case of lethal invasive mucormycosis, a rare fungal infection, which predominantly affects immunocompromised patients, and is reported in a 57-year-old female who presented with cerebral abscess. The patient, who had undiagnosed diabetes mellitus, presented with extensive right hemifacial deficiency of the bones and soft tissues consequent to surgical resection of the ethmoid-spheno-maxillo-orbital district after mucormycosis. A reconstruction with a pectoral pedunculated flap was performed. The maxillary swelling extended to the contiguous area, involving the palate and homolateral orbital floor. Mucous and cutaneous samples showed the presence of Aspergillus fumigatus, and diagnosis of rhinocerebral mucormycosis was made. The patients also presented with a right hemiplegia consequent to a cerebral abscess by Eikenella corrodens. The authors decided to position an intraoral prosthesis to restore palatal integrity and masticatory function and inserted four titanium fixtures for the retention of the bone-anchored facial prosthesis
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
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