单侧重复系统：肾脏的长度及功能比较
Unilateral duplicated system: comparative length and function of the kidneys.
作者信息
Davidovits Miriam, Eisenstein Bella, Ziv Niza, Krause Irit, Cleper Roxanna, Bar-Sever Zvi
机构信息
Department of Nephrology, Schneider Children's Medical Center of Israel, Petah Tiqva.
出版信息
Clin Nucl Med. 2004 Feb;29(2):99-102. doi: 10.1097/01.rlu.0000109331.37224.5f.
OBJECTIVE
The objective of this study was to estimate kidney length and function in patients with unilateral duplex kidney.
MATERIALS AND METHODS
Thirteen patients with a unilateral duplicated system were reviewed retrospectively. The length of the kidneys was measured by ultrasound, and the relative function of the kidneys was estimated by renal scan.
RESULTS
In all patients, the duplex kidney was the left one. The length of the right kidney on the renal ultrasound growth chart was from -1.5 to +0.4 standard deviations from the mean for age, and the left kidney length was from -0.5 to +4.3 standard deviations from the mean. On renal scans the kidneys with a duplicated system contributed 51 to 67% to total renal function; the contralateral ones, 33 to 49%.
CONCLUSIONS
Kidneys with a duplicated system may be larger than their counterparts and they may contribute more to total renal function. When a disparity in length between the 2 kidneys is encountered, 1 of the possibilities that should be taken into account is a unilateral duplicated system.
目的
本研究的目的是评估单侧重复肾患者的肾脏长度及功能。
材料与方法
回顾性分析13例单侧重复肾系统患者。通过超声测量肾脏长度，并通过肾扫描评估肾脏的相对功能。
结果
所有患者中，重复肾均为左侧。肾超声生长图表显示，右侧肾脏长度相对于年龄均值的标准差为-1.5至+0.4，左侧肾脏长度相对于年龄均值的标准差为-0.5至+4.3。肾扫描显示，重复肾系统的肾脏对总肾功能的贡献率为51%至67%；对侧肾脏的贡献率为33%至49%。
结论
重复肾系统的肾脏可能比其对应侧的肾脏更大，并且对总肾功能的贡献可能更多。当两肾长度出现差异时，应考虑的一种可能性是单侧重复肾系统。
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