Sonographic measurements of renal size in normal children and children with compensatory renal hypertrophy.

Renal length and anteroposterior diameter of both kidneys were measured from normal renal sonograms of 326 children (aged from newborn to 15 years) and graphed to provide a growth chart of normal renal size against age. Mean renal lengths are reported for each year of age. The renal size of 20 children with single kidney, either congenital or postnephrectomy, were also evaluated. Our data showed actual nephromegaly of the solitary kidney indicating compensatory renal growth.