Abstract
The value of excretion urography has been studied in 48 patients with severe non-oliguric renal failure (blood urea more than 200 mg/100 ml. or creatinine clearance less than 10 ml./minute). The renal outlines were clearly defined in all but four patients. In each of the ten patients with extrarenal obstruction sufficient of the collecting system was seen to diagnose the presence of the obstruction. In only two patients without obstruction was no pyelogram seen. No ill effects were observed. The importance of careful radiography is emphasized. The need for facilities for dialysis is discussed.
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