泌尿 Fraley syndrome

a. Intravenous urography (nephrotomogram) showing slight fullness of the right upper pole calyces, with an associated lucency crossing the left upper pole infundibulum. b. Abdominal aortogram shows an artery (arrow) in the position corresponding to the lucency seen on intravenous urography, confirming the diagnosis of Fraley'syndrome.

肾动脉、静脉引起肾盂肾盏系统外在压迫，导致上组肾盏漏斗部压迫梗阻。

相关：肾动脉分为前后两支，前支分布于前下方，位于肾静脉及肾盂之间，后支分布于后上方，位于肾盂后。

a rare condition in which crossing vessels causes partial obstruction of the upper pole infundibulum, and back pain ensues. Crossing vessels are generally asymptomatic. The diagnosis can be suggested by findings on excretory urography (Fig.1) where there is isolated dilatation of the upper pole infundibulum.