Rottenberg G T, De Bruyn R, Gordon I
Department of Radiology, Hospital for Children NHS Trust, London, United Kingdom.
AJR Am J Roentgenol. 1996 Nov;167(5):1255-9. doi: 10.2214/ajr.167.5.8911191.
We investigated the sonographic measurements of the functioning kidney of children who were born with a single functioning kidney.
In 56 children (0-6 years old) with one multicystic dysplastic kidney and one functioning kidney, the length of the functioning kidney was correlated with the child's age, weight, and body surface area.
The mean length of the kidney was 51.0 mm in children 2 weeks old, 56.8 mm at 9 weeks, 62.8 mm at 23 weeks, 69.6 mm at 46 weeks, 71.7 mm at 63 weeks, 78.0 mm at 112 weeks, 79.6 mm at 172 weeks, 86.7 mm at 225 weeks, and 91.0 mm at 279 weeks. When these results were compared with existing sonographic standards for bilateral functioning kidneys, the single functioning kidneys were longer by a statistically significant amount.
Compensatory hypertrophy of single functioning kidneys occurs in utero. In children of the ages we investigated, the size of single functioning kidneys exceeded established standards for the size of bilateral functioning kidneys.
我们研究了单肾患儿功能正常肾脏的超声测量结果。
对56例（0至6岁）一侧为多囊性发育不良肾、另一侧为功能正常肾脏的患儿，将功能正常肾脏的长度与患儿的年龄、体重及体表面积进行相关性分析。
2周龄患儿肾脏平均长度为51.0毫米，9周龄时为56.8毫米，23周龄时为62.8毫米，46周龄时为69.6毫米，63周龄时为71.7毫米，112周龄时为78.0毫米，172周龄时为79.6毫米，225周龄时为86.7毫米，279周龄时为91.0毫米。将这些结果与现有的双侧功能正常肾脏的超声标准进行比较时，单功能正常肾脏明显更长，差异具有统计学意义。
单功能正常肾脏的代偿性肥大在子宫内就已发生。在我们所研究的年龄段患儿中，单功能正常肾脏的大小超过了双侧功能正常肾脏大小的既定标准。
