RESUMEN
Nocardia asteroides has been reported as the cause of keratitis in only 7 cases and of other ocular disease in another 12 cases. We report a case of N. asteroides keratitis that presented 3 weeks after rural trauma and progressed despite trials of appropriate antibiotics. Seven weeks after the origianl injury a successful conjunctival flap was placed over the cornea. The morphology and the sensitivity testing of N. asteroides to antibiotics appears necessary before reliable information can be obtained for clinical use. Moreover, our case did not show the relatively benign course of other reported cases of nocardia keratitis.
Asunto(s)
Queratitis/etiología , Nocardiosis , Adolescente , Antibacterianos/uso terapéutico , Conjuntiva/trasplante , Úlcera de la Córnea/etiología , Humanos , Queratitis/cirugía , Masculino , Pruebas de Sensibilidad Microbiana , Nocardia asteroides , Trasplante HomólogoAsunto(s)
Hemangioma/patología , Neoplasias del Bazo/patología , Biomarcadores de Tumor/análisis , Hemangioma/química , Hemangioma/complicaciones , Hemangioma/cirugía , Humanos , Inmunohistoquímica , Persona de Mediana Edad , Neoplasias Primarias Múltiples/química , Neoplasias Primarias Múltiples/patología , Tumores Neuroendocrinos/complicaciones , Tumores Neuroendocrinos/patología , Neoplasias Pancreáticas/complicaciones , Neoplasias Pancreáticas/patología , Neoplasias del Bazo/química , Neoplasias del Bazo/complicaciones , Neoplasias del Bazo/cirugíaAsunto(s)
Sulfato de Bario , Estenosis Esofágica/diagnóstico por imagen , Estenosis Esofágica/cirugía , Reflujo Gastroesofágico/complicaciones , Enfermedades del Esófago/complicaciones , Hernia Diafragmática/complicaciones , Hernia Diafragmática/diagnóstico por imagen , Humanos , Métodos , Radiografía , Estómago/diagnóstico por imagen , Úlcera/complicacionesRESUMEN
The effects of microwave radiation in reducing decalcification time were evaluated by measuring rates of calcium removal from samples of rat and cat teeth in 0.1 mol l-1 EDTA. In some cases, 3% glutaraldehyde was added to the decalcifying solution. Test specimens were placed in a microwave oven at 39 +/- 2 degrees C for repeated periods of 1-2 h. Control specimens were placed in a conventional oven at 39 degrees C for the same times or held at room temperature. The calcium removed during each treatment was measured using an atomic absorption spectrophotometer. There was no consistent difference between the results obtained with microwave radiation as compared with heating in a conventional oven, although in both cases decalcification was slightly faster than at room temperature. These results are attributed to thermal effects. No evidence for non-thermal effects of micro-radiation was found.
Asunto(s)
Calcio/análisis , Microondas , Diente/anatomía & histología , Animales , Calcio/aislamiento & purificación , Gatos , Ácido Edético , Glutaral , Histocitoquímica/métodos , Cinética , Masculino , Ratas , Temperatura , Diente/químicaRESUMEN
Malignant fibrous histiocytoma, a tumor of mesenchymal tissue, is being reported with increased frequency. However, no cases of primary tumors involving the gastrointestinal tract have yet been described. This report documents a case in which the patient clinically manifested a colonic obstruction associated with intussusception. Following radical resection of the mass, close re-evaluation after one year has shown no evidence of tumor recurrence.