1. What is Pediatric Testicular Volume Calculator?

Definition: This calculator estimates normal pediatric testicular volume using the ellipsoid formula adjusted for pediatric norms.

Purpose: It helps pediatricians and urologists assess testicular development and detect abnormalities in children.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V \) — Testicular volume (cm³)
• \( L \) — Length (cm)
• \( W \) — Width (cm)
• \( H \) — Height (cm)

Explanation: The formula calculates the volume of an ellipsoid, which approximates the shape of the testis.

3. Importance of Testicular Volume Measurement

Details: Accurate volume measurement helps monitor puberty progression, detect cryptorchidism, and assess varicocele impact.

4. Using the Calculator

Tips: Measure testicular dimensions via ultrasound or orchidometer. Enter all three dimensions in centimeters.

5. Frequently Asked Questions (FAQ)

Q1: What are normal pediatric testicular volumes?
A: Volume varies by age: 1-3 cm³ in infancy, 4-8 cm³ in childhood, increasing during puberty to adult size (15-25 cm³).

Q2: Why use the ellipsoid formula?
A: It provides more accurate volume estimation than simple length measurements, correlating well with actual testicular volume.

Q3: How does this differ from adult calculations?
A: The formula is the same, but interpretation uses pediatric reference values for age and Tanner stage.

Q4: When should I be concerned about volume?
A: If volume is <1 cm³ in infants, <2 cm³ in prepubertal children, or significantly asymmetric (>2 cm³ difference).

Q5: Can I use this for testicular tumor assessment?
A: No, this calculates normal volume. Tumor assessment requires different evaluation methods.