Intermittent hydronephrosis as a cause of a false-negative pressure-flow study |
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Authors: | Dr William G Horstman Michael D Darcy |
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Institution: | (1) Washington University School of Medicine, Mallinckrodt Institute of Radiology, 510 S. Kingshighway Blvd., 63110 St. Louis, MO, USA |
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Abstract: | A case is reported of a negative pressure-flow study in a patient with intermittent hydronephorosis. This is the first known
report of a properly performed pressure-flow study failing to diagnose obstruction due to the intermittent nature of the obstruction
itself. This case also supports the concept that the ureteropelvic junction (UPJ) can be intrinsically normal in patients
with intermittent hydronephrosis secondary to a crossing renal vessel. It also reaffirms the need to study these patients
while they are symptomatic. |
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Keywords: | Hydronephrosis Obstruction ureteral pelvic junction Whitaker test Urinary tract obstruction |
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