SECONDARY URETEROPELVIC JUNCTION OBSTRUCT ION

Secondary Ureteropelvic Junction Obstruction: Pressure alteration in t he lower urinary tract can lead from subpelvine narrowness to a clinic ally relevant ureteropelvic junction obstruction. In View of this path ophysiology we retrospectively analysed our case material. Over the la st 10 years, 15 instances of secondary ureteropelvic junction obstruct ion were found. The results of the primary IVP revealed the following discrete radiologic findings: An extrapelvic renal pelvis, a psoas mar gin phenomenon with a high ureteropelvic segment, or other forms of a relatively narrow subpelvine position. As causal occurrence for decomp ensation in the pyeloureteral junction we found the Mainz-Pouch proced ure (n=8), status post ureteroneocystostomy (n=2), morbus Ormond (n=2) , advancing infravesical obstruction (n=2) and a preveisical ureterost one (n=1). in cases of a suspicious constellation in the IVP and corre sponding disease, the possible development of secondary ureteropelvic junction obstruction should be considered and the patient checked at s hort-term intervals.