Sixthly, inferior venacavagrams and intravenous pyelograms were of no value in detecting occult lymphoma when the disease was early. The abnormal lymph nodes were only demonstrated by ...

They found a downward trend in the use of intravenous pyelograms and retrograde pyelograms, and an increase in the use of endoscopy, computed tomography urograms, and magnetic resonance urography.