Discuss the possible reasons for the presence of trace amounts of blood in a three-year-old child’s urine and provide corresponding medical examination recommendations.

Discuss the possible causes and corresponding treatment methods for hematuria in babies after intense physical activity.

The main symptoms of Wilms tumor include abdominal swelling, fever, anemia, and urinary abnormalities.

Hematuria can be a symptom of various diseases and requires treatment tailored to the specific situation.

Why is there a small amount of blood in the urine of a three-year-old child, and how should it be checked and treated?