RESUMEN
This study describes a systematic comparison of intra-arterial digital subtraction angiography (DSA) of the main renal arteries with conventional angiography (CA), the currently accepted "gold standard" for the diagnosis of renal artery stenosis. Twenty-five patients scheduled for abdominal aortography for various indications underwent first DSA then CA. The DSA and CA images were evaluated for number of renal arteries, presence and grade of renal artery stenosis, presence of post-stenotic dilation or fibromuscular changes, and diagnostic and pictorial adequacy of the images. DSA was found to be diagnostically adequate in 92% of cases, compared with 96% for CA. In evaluating significant main renal artery stenosis, which the authors assumed to be any stenosis greater than 50%, there were 10 such stenoses seen by CA. DSA also detected 10 cases, but there was 1 false positive and 1 false negative, yielding a sensitivity of 90% and a specificity of 98%. There was also close correlation of DSA and CA for the few cases of post-stenotic dilatation and fibromuscular dysplasia encountered. The authors conclude that DSA is an acceptable substitute for CA in the evaluation of patients for main renal artery stenosis.
Asunto(s)
Angiografía de Substracción Digital , Angiografía , Obstrucción de la Arteria Renal/diagnóstico por imagen , Arteria Renal/diagnóstico por imagen , Estudios de Evaluación como Asunto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Sensibilidad y EspecificidadRESUMEN
Three patients were scanned in whom the sonographic diagnoses of perisplenic fluid collections were made. Computed tomography scanning demonstrated that the appearances were not caused by perisplenic pathology but by lateral extent of normal left lobe of the liver. Methods to avoid this potential sonographic pitfall are suggested.
Asunto(s)
Absceso/diagnóstico , Hematoma/diagnóstico , Hígado/diagnóstico por imagen , Enfermedades del Bazo/diagnóstico , Ultrasonografía , Absceso/diagnóstico por imagen , Adulto , Diagnóstico Diferencial , Femenino , Hematoma/diagnóstico por imagen , Humanos , Masculino , Bazo/diagnóstico por imagen , Enfermedades del Bazo/diagnóstico por imagen , Tomografía Computarizada por Rayos XAsunto(s)
Neoplasias de los Genitales Femeninos/patología , Femenino , Neoplasias de los Genitales Femeninos/diagnóstico , Neoplasias de los Genitales Femeninos/diagnóstico por imagen , Humanos , Linfografía , Espectroscopía de Resonancia Magnética , Estadificación de Neoplasias , Neoplasias Ováricas/diagnóstico , Tomografía Computarizada por Rayos X , Ultrasonografía , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias Uterinas/diagnósticoRESUMEN
We present a patient with penetrating thoracic trauma who demonstrated an ill-defined, enlarging pulmonary opacity over several days. Computed tomography confirmed the clinical suspicion of a pulmonary artery aneurysm.
Asunto(s)
Aneurisma/etiología , Arteria Pulmonar/lesiones , Tomografía Computarizada por Rayos X , Heridas Punzantes/complicaciones , Adulto , Aneurisma/diagnóstico por imagen , Humanos , MasculinoRESUMEN
The computed tomographic and angiographic findings of an isolated external iliac artery aneurysm secondary to cystic medial necrosis in a patient without Marfan's disease are demonstrated. A review of the differential diagnosis and surgical treatment of iliac artery aneurysms is presented. The dramatic surgical sequelae in this patient underscore the importance of preoperative consideration of this rare diagnosis.