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Updated: Aug 20, 2026

Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
Published on: October 12, 2017
Abstract:
Radiolucent filling defects within the renal pelvis are common findings in diagnositc urography, and because of their myriad causes the diagnostician is often faced with a challenging problem. Several of the more unusual causes of renal pelvis filling defects are described and their diagnosis, pathophysiology, and therapy discussed.
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