RESUMO
Reported are ten instances of major bronchial obstruction by mucous plugs in eight patients during which the clinical features resembled pulmonary embolism. Perfusion lung studies showed significantly diminished perfusion of the involved portions of the lungs. The chest radiographs generally did not, however, reflect the severity of the airway obstruction and in some instances were completely normal. The ventilation studies indicated the extent and severity of the obstruction and matched with the perfusion scans. Pulmonary arteriograms were performed in three patients and gave direct evidence of focally diminished lung perfusion without embolism. The physiologic mechanisms underlying the condition are discussed.
Assuntos
Obstrução das Vias Respiratórias/diagnóstico , Brônquios/metabolismo , Muco/metabolismo , Embolia Pulmonar/diagnóstico , Adulto , Obstrução das Vias Respiratórias/diagnóstico por imagem , Diagnóstico Diferencial , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Radiografia , Cintilografia , Síndrome , Agregado de Albumina Marcado com Tecnécio Tc 99m , Radioisótopos de XenônioAssuntos
Cabeça do Fêmur/diagnóstico por imagem , Úmero/diagnóstico por imagem , Osteoartrite/diagnóstico por imagem , Idoso , Feminino , Cabeça do Fêmur/patologia , Articulações dos Dedos/diagnóstico por imagem , Humanos , Úmero/patologia , Articulação Metacarpofalângica/diagnóstico por imagem , Osteoartrite/patologia , RadiografiaRESUMO
The diagnosis of obstructive uropathy may be difficult in the occasional case in which there is little or no dilatation of the collecting system. A case is presented in which anuric renal failure resulted from encasement of the ureters by tumor. The excretory urogram revealed a delayed pyelogram and a dense nephrogram with minimal dilatation of the collecting systems. The combination of a dense nephrogram and delayed pyelogram should raise the possibility of obstruction, regardless of the appearance of the collecting systems.
