RESUMEN
THE SITUATION: Buruli's ulcer is a severe necrotic cutaneous infection due to Mycobacterium ulcerans. It is a major public health problem in developing countries. FROM A CLINICAL POINT OF VIEW: The early stage of the infection corresponds to a painless cutaneous nodule, whereas the late stage corresponds to ulceration with detachment of the edges. There is currently no other treatment than surgical excision combined with heat therapy. FROM A DIAGNOSTIC POINT OF VIEW: Three methods can be used: direct examination of swabs stained according to Ziehl-Neelsen's method, culture in specific medium at 32 degrees C and the polymerization chain reaction assay (PCR). The latter is the technique of choice.
Asunto(s)
Infecciones por Mycobacterium no Tuberculosas/diagnóstico , Mycobacterium ulcerans/aislamiento & purificación , Úlcera Cutánea/microbiología , Medios de Cultivo , ADN Bacteriano/análisis , Guyana Francesa , Humanos , Reacción en Cadena de la Polimerasa , Coloración y Etiquetado/métodosRESUMEN
Breast xeroradiography is a new radiological technique based upon the electrostatic and not the photographic properties of silver bromide. We have used it particularly with reference to breast disorders in order to compare it to traditional procedures and to seek the best conditions to obtain the most informative picture by comparing the radiation emitted by a tungsten anode with the radiation emitted by a molybdenum anode with molybdenum or aluminium filtration. We concluded the xeroradiography was of value in breast problems in the following instances: 1. For certain types of microcalcification. 2. For the precise study of the relation of the breast to the chest wall. 3. For breast with a uniform high density on conventional films (young organ, fibro-glandular hyperplasia, after high-dosage irradiation). 4. In the study of deep seated carcinomas or those in the sub-mammary fold. 5. In studying the axilla where the ribs, muscles and nodes are seen together on the same film. Comparative study of xeroradiography using either a tungsten or molybdenum anode was markedly in favour of the latter under all the circumstances mentioned above.