Clinical Experience with Upper Tract Urodynamics

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Abstract
Of 25 upper tract urodynamic studies performed in 22 patients, 9 positive results were obtained. The diagnosis of intrinsic ureterovesical junction obstruction was suspected in 11 children but only confirmed in 2. In 6 other children changes in bladder volume markedly affected upper tract function. While diuretic renography may confirm obstruction in many doubtful cases, when function is poor and the system is dilated massively a urodynamic study often will be the only definitive diagnostic procedure.