RESUMO
The demand for image-guided renal biopsy has increased due to the better detection of renal lesions; however, despite modern imaging techniques many small renal tumors cannot be classified as benign because they cannot be differentiated from renal cell carcinoma. Ultrasound and computed tomography (CT)-guided kidney biopsy is a safe and accurate method in the diagnostics of renal lesions and can be helpful in the selection of new ablative and pharmaceutical forms of treatment and avoid unnecessary operations. This article describes the clinical indications for an image-guided biopsy and discusses factors which should be considered when performing a biopsy.
Assuntos
Carcinoma de Células Renais , Biópsia Guiada por Imagem , Neoplasias Renais , Carcinoma de Células Renais/diagnóstico , Humanos , Rim , Neoplasias Renais/diagnóstico , Tomografia Computadorizada por Raios XAssuntos
Débito Cardíaco , Ecocardiografia , Velocidade do Fluxo Sanguíneo , Humanos , TermodiluiçãoAssuntos
Ecocardiografia , Derrame Pericárdico/etiologia , Pericárdio , Punções/efeitos adversos , Trombose/etiologia , Humanos , Masculino , Pessoa de Meia-Idade , Derrame Pericárdico/diagnóstico , Pericardite/diagnóstico , Pericardite/etiologia , Pericárdio/cirurgia , Radioterapia/efeitos adversosRESUMO
There is a need for a non-invasive method to evaluate the hemodynamic consequences of pacing. The value of Doppler echocardiography in assessing relative changes in stroke volume and cardiac output is reviewed. We present preliminary observations illustrating the potential value of Doppler echocardiography in cardiac pacing.
