'Diagnostic overkill?' An analysis of 88 negative renal angiograms.

11.3% of 776 renal angiograms evaluated retrospectively displayed normal findings. The main reasons which had led to the misuse of angiography in our cases were: technically poor urograms, incorrect interpretation of anatomical variations and the lack of other examinations associated with the urogram. A diagnostic plan including all less invasive and dangerous procedures is proposed placing sonography in central position.