Purpose: We determine what additional information would be detected by renal ultrasonography that was not identified by a normal excretory urogram (IVP) performed for the evaluation of microscopic hematuria. Materials and Methods: A retrospective review was done of 101 patients with microscopic hematuria and a normal IVP who underwent renal ultrasonography. Results: Of the 101 patients with microscopic hematuria and a normal IVP, renal ultrasonography was abnormal in 20 percent. All findings were ultimately proved to be of no clinical significance, although 6 of 21 patients required a total of 10 additional studies, including 9 computerized tomography scans and 1 renal arteriogram. Conclusions: These data demonstrate that renal ultrasonography is unnecessary in a patient with microscopic hematuria and a normal IVP.
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