Prostate Volume Calculator MSKCC

Prostate Volume Formula:

\[ V = \frac{π}{6} \times L \times W \times H \]

Prostate Volume (cm³):

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1. What is the Prostate Volume Calculator MSKCC?

Definition: This calculator estimates prostate volume using the ellipsoid formula (π/6 × L × W × H) as recommended by Memorial Sloan Kettering Cancer Center (MSKCC).

Purpose: It helps urologists and radiologists assess prostate size for diagnostic and treatment planning purposes.

2. How Does the Calculator Work?

The calculator uses the ellipsoid formula:

\[ V = \frac{π}{6} \times L \times W \times H \]

Where:

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

Explanation: The formula approximates the prostate as an ellipsoid and calculates its volume based on three orthogonal measurements.

3. Importance of Prostate Volume Calculation

Details: Prostate volume assessment is crucial for diagnosing BPH, planning prostate biopsies, calculating PSA density, and assessing cancer risk.

4. Using the Calculator

Tips: Enter the prostate dimensions (length, width, height) in centimeters as measured by TRUS or MRI. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What imaging modalities can provide these measurements?
A: Transrectal ultrasound (TRUS) or magnetic resonance imaging (MRI) are commonly used.

Q2: How accurate is the ellipsoid formula?
A: It's a good approximation (within 10-15% of actual volume) for most clinical purposes.

Q3: What's a normal prostate volume?
A: Typically 20-30 cm³ in young men, may increase with age (BPH).

Q4: How is this different from the prolate ellipsoid formula?
A: The MSKCC formula uses π/6 (0.52) instead of 0.52-0.79, providing a more conservative estimate.

Q5: Can I use this for post-TURP measurements?
A: Yes, but accuracy may be reduced if the prostate has significant irregularities.