Estimating tumor volume

Video lesson · a walkthrough of the app screens with narration · available in Portuguese and English

3 min 4 steps

Objective

Obtain an estimate of tumor volume and the percentage of the prostate involved from the biopsy.

Tumor volume informs aggressiveness and helps with planning — but it is rarely computed by hand. The app does it from the data you already entered.

1
Complete the biopsy with CCL
For greater confidence, record the cancer core length (CCL) in each positive sector.
2
Provide the prostate volume
The prostate volume (cc) feeds into the sector-volume fraction.
3
Read the estimate
The app returns tumor volume in cc, the percentage of the prostate and a classification (small/moderate/large).
4
Check the confidence level
Confidence is high when CCL and volume are available; low when data are missing.

Without CCL, the estimate still works, but with reduced confidence — record the CCL whenever the report provides it.
A large tumor volume reinforces attention to the risk of ECE and margin.