RESUMEN
Adrenal extramedullary hematopoiesis may occur in association with various hematologic diseases. Its identification is invariably incidental, imaging of the lesion is poorly specific and the diagnosis requires the histological examination. We report a case of extramedullary hematopoiesis involving the right adrenal gland in a patient with hereditary spherocytosis. The literature on this entity has been reviewed and the differential with other conditions involving the adrenal gland and showing hematopoietic tissue infiltration is discussed.
Asunto(s)
Glándulas Suprarrenales/patología , Glándulas Suprarrenales/fisiopatología , Hematopoyesis Extramedular/fisiología , Hallazgos Incidentales , Adenoma/diagnóstico , Neoplasias de las Glándulas Suprarrenales/diagnóstico , Glándulas Suprarrenales/cirugía , Adrenalectomía , Adulto , Diagnóstico Diferencial , Enfermedad de Gilbert/complicaciones , Humanos , Masculino , Mielolipoma/diagnóstico , Esferocitosis Hereditaria/complicaciones , EsplenectomíaRESUMEN
Propolis and plant secretions from three species, most frequently mentioned as botanical sources of the bee glue in Brazil (Baccharis dracunculifolia, Araucaria angustifolia and Eucalyptus citriodora) have been investigated using GC-MS. Based on chemical evidence, B. dracunculifolia was shown to be the main propolis source in São Paulo state. The antibacterial and antifungal activities of all four materials were also tested, the most active being propolis and Baccharis leaf exudate.
Asunto(s)
Antiinfecciosos/química , Abejas , Extractos Vegetales/química , Plantas/química , Própolis/química , Animales , Antibacterianos , Antiinfecciosos/farmacología , Antifúngicos/química , Antifúngicos/farmacología , Brasil , Candida albicans/efectos de los fármacos , Eucalyptus/química , Cromatografía de Gases y Espectrometría de Masas , Pruebas de Sensibilidad Microbiana , Extractos Vegetales/farmacología , Hojas de la Planta , Plantas Medicinales , Especificidad de la Especie , Staphylococcus aureus/efectos de los fármacosRESUMEN
A combination of phase-shift with gray-code light projection into a three-dimensional vision system based on the projection of structured light is presented. The gray-code method is exploited to detect without ambiguity even marked surface discontinuities, whereas the phase-shift technique allows the measurement of fine surface details. The system shows excellent linearity. An overall mean value of the measurement error equal to 40 microm, with a variability of approximately +/-35 microm, corresponding to 0.06% of full scale, has been estimated. The implementation of the technique is discussed, the analysis of the systematic errors is presented in detail, and the calibration procedure designed to determine the optimal setting of the measurement parameters is illustrated.
RESUMEN
A three-dimensional (3-D) imaging system based on Gray-code projection is described; it is thought to be used as an integration to the already developed profilometer based on the projection of multifrequency gratings. The Gray-code method allows us to evaluate the 3-D profile of objects that present even marked discontinuities of the surface, thus increasing the flexibility of the measuring system as to the topology of the objects that can be measured. The basic aspects of Gray-code projection for 3-D imaging and profiling are discussed, with particular emphasis devoted to the study of the resolution of the method and to the analysis of the systematic errors. The results of this study allow us to determine the optimal setting of the parameters of the measurement and to develop a suitable calibration procedure. The procedures for implementing the Gray-code method are presented, and some interesting experimental results are reported. Calibration of the system reveals an accuracy of 0.2 mm, corresponding to 0.1% of the field of view.
