O truction is one of the most important a ormalities of the urinary tract ， since it eventually leads to decompe ation of the muscular conduits and reservoirs ， back pre ure ， and atrophy of renal parenchyma 梗阻是泌尿道最重要的异常之一，因其最终使肌性管道及其容器失去代偿能力，发生反压及肾实质萎缩。
Obstruction is one of the most important abnormalities of the urinary tract ， since it eventually leads to decompensation of the muscular conduits and reservoirs ， back pressure ， and atrophy of renal parenchyma 梗阻是泌尿道最重要的异常之一，因其最终使肌性管道及其容器失去代偿能力，发生反压及肾实质萎缩。
