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  • Title: Evaluation of ureteropelvic junction obstruction (UPJO) by diuretic renography.
    Author: Sultan S, Zaman M, Kamal S, Zafar N, Naqvi A, Rizvi A.
    Journal: J Pak Med Assoc; 1996 Jul; 46(7):143-7. PubMed ID: 8993040.
    Abstract:
    Of 52 cases with 56 affected renal units having symptoms and signs suggestive of Ureteropelvic Junction Obstruction (UPJO) evaluated by conventional (F + 15) diuretic renography where frusemide is given 15 minutes post-injection of radiopharmaceutical m99TC.DTPA.F + 15, twelve (21%) showed a good clearance (group A), 16 (28%) showed partial (group B) and 28 (50%) a poor clearance pattern (group C) indicating a definite obstruction. A high flow (F-15) diuretic renography where frusemide is given 15 minutes prior to the radiopharmaceutical m99TC.DTPA, was done in 23 cases with 27 affected renal units. Eleven renal units showed a good clearance (group A). Of these, 7 (64%) showed a persistent good clearance, 3 (27%) converted to poor clearance and 1 (9%) to partial clearance pattern. Of 8 renal units in group B, 5 (63%) converted to poor clearance and two (25%) to good clearance on F-15 and one remained unchanged. All renal units which presented as poor clearance (group C) on conventional (F + 15) diuretic renography remained unchanged on high flow (F-15) diuretic renography. In majority of cases conventional (F + 15) renography gave a reliable assessment of the upper tract drainage, however, since equivocal group was resolved by the F-15 and the intermittent obstruction group was definitely diagnosed, high flow (F-15) diuretic renography was more conclusive in assessment as compared to F + 15.
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