Background: Ultrasound scan is reliable for measurement of liver, spleen and kidney sizes. Normal measurements of these organs have been established in other populations but not in healthy African Ugandan children. Pathology of these organs commonly alters their sizes and ultrasound assessment is important in detecting pathological change in size.
Objectives: To discuss the normal sonographic measurements for liver, spleen and kidneys in healthy children in Uganda, Africa and to compare these with measurements from other populations.
To correlate the measurements obtained in Ugandan children with age, height and body weight and to compare this correlation with correlations from pediatric populations in other parts of the world.

Methods: Data on sonographic measurements in Uganda was obtained through a cross-sectional study from June to November 2006 in five primary schools in Kampala district, Uganda. Heights and weights of 238 randomly selected healthy pupils aged 6-15 years were measured. Their liver, spleen and kidney sizes were then measured by ultrasound scan. The data was then computer processed. Literature was reviewed to compare findings from similar studies.

Results: In Ugandan children, the lengths of the three organs showed the best correlation with age, height and body weight with weight showing the greatest correlation except for the spleen where height showed the greatest correlation. These observations are similar to studies from other populations.

Conclusion: Normal sizes of the liver, spleen and kidneys in selected healthy Ugandan children have been documented. The lengths of these organs correlate with body weight, height or age, as is found in other pediatric populations.