RESUMO
El tumor de Wilms, también llamado Nefroblastoma es el segundo tumor maligno troperineal más común en el niño. Es el responsable del 5 al 10 por ciento de todos los tumores en la infancia. En nuestro medio hasta 1979 la sobrevida no superaba el 34 por ciento. A partir de entonces con el uso de un protocolo multidisciplinario de tratamiento, basado en el National Wilms Tumor Study de los EEUU y a partir de 1986 Grupo Cooperativo Brasilero para el tratamiento del tumor de Wilms, la sobrevida alcanzó el 83 por ciento. Los autores presentan la experiencia con el tratamiento de 25 niños portadores de Tumor de Wilms en el período 1979 a 1986. Son analizados la estadificación, el tratamiento quirúrgico, quimioterápico y radioterapéutico. El seguimiento posoperatorio fue entre 5 y 196 meses con una media de 69 meses, con una sobrevida globlal de 88 por ciento
Assuntos
Humanos , Criança , Tumor de Wilms/cirurgiaRESUMO
El tumor de Wilms, también llamado Nefroblastoma es el segundo tumor maligno troperineal más común en el niño. Es el responsable del 5 al 10 por ciento de todos los tumores en la infancia. En nuestro medio hasta 1979 la sobrevida no superaba el 34 por ciento. A partir de entonces con el uso de un protocolo multidisciplinario de tratamiento, basado en el National Wilms Tumor Study de los EEUU y a partir de 1986 Grupo Cooperativo Brasilero para el tratamiento del tumor de Wilms, la sobrevida alcanzó el 83 por ciento. Los autores presentan la experiencia con el tratamiento de 25 niños portadores de Tumor de Wilms en el período 1979 a 1986. Son analizados la estadificación, el tratamiento quirúrgico, quimioterápico y radioterapéutico. El seguimiento posoperatorio fue entre 5 y 196 meses con una media de 69 meses, con una sobrevida globlal de 88 por ciento
Assuntos
Humanos , Criança , Tumor de Wilms/cirurgiaRESUMO
Microanatomic features of unilateral condylar hyperplasia (UCH) are described. The articular surface exhibited clefts with surrounding elevations, and globules varying 0.5-2 microns in diameter. The articular zone presented giant coiled fibers, and the proliferative zone was composed of small round cells. The findings suggest that degenerative changes occur in UCH, both in adult and juvenile forms.
Assuntos
Côndilo Mandibular/ultraestrutura , Adolescente , Adulto , Cartilagem Articular/ultraestrutura , Assimetria Facial/patologia , Feminino , Humanos , Hiperplasia/patologia , Má Oclusão/patologia , Microscopia Eletrônica de Varredura , Propriedades de SuperfícieRESUMO
The authors propose a variation of the technique for making ocular protheses for large ophthalmic cavities introducing an expanded polystyrene (styrofoam) to the acrylic resin at the time of making the prosthetic sclera, aiming at reducing the weight of the prosthesis and thus improving mobility and aesthetics. This study compares the differences in weight, absorption of water and resistance to rupture by hydrostatic pressure of the pieces made of acrylic resin, chemically activated, heat activated and cross-linked by the proposed technique and by the technique for hollow ocular prothesis. The proposed technique presents advantages in manufacturing time and handling of the material.
Assuntos
Resinas Acrílicas/química , Olho Artificial , Poliestirenos , Análise de Variância , Humanos , Desenho de PróteseRESUMO
Two cases of active unilateral condylar hyperplasia which were treated with condylectomy alone are presented. The first case was an adult form and the other a juvenile form. Both were classified as active by using 99Tc bone scintigraphy. Clinical and radiographic features of both cases conformed to the hemimandibular hypertrophy type. Satisfactory facial symmetry and dental occlusion were achieved. Histopathological data confirmed the activity of the articular cartilage layers.
Assuntos
Assimetria Facial/etiologia , Côndilo Mandibular/patologia , Doenças Mandibulares/complicações , Adolescente , Adulto , Feminino , Humanos , HiperplasiaRESUMO
The effect of indirect trauma to the rat temporomandibular joint (TMJ) is analysed by means of an experimental model. The trauma, applied from an angle-glenoid fossa direction, produced injury of the TMJ. The histological data demonstrated that the impact could produce fractures of the glenoid fossa, but no hemarthrosis was observed. Trauma, both with or without fracture, caused proliferative changes in the TMJ. The glenoid fossa, the articular disk and the articular surface of the condyle were injured. Thickening of the articular surfaces had resulted in reduced joint space. Subsequently, remodelling changes in the condyle were found.
Assuntos
Articulação Temporomandibular/lesões , Animais , Reabsorção Óssea/patologia , Calo Ósseo/patologia , Cartilagem Articular/patologia , Côndilo Mandibular/patologia , Traumatismos Mandibulares , Necrose , Osteogênese , Ratos , Estresse Mecânico , Osso Temporal/patologia , Articulação Temporomandibular/patologia , Fatores de TempoRESUMO
Statistical analysis of 550 isolated maxillo-facial fractures is presented. Data obtained illustrated the important number of maxillo-facial fractures in Sao Paulo, the automobilistics accidents were responsible for most maxillo-facial trauma, the jaw and the malar were more predominant than the others structures and the conservative treatment was the most used one.