🫘 R.E.N.A.L. Nephrometry Score
UseWhen to use: planning partial vs radical nephrectomy counseling.
Strata4–6 low, 7–9 moderate, 10–12 high complexity teaching bands.
LimitsWhen not to use: replacing metastatic staging workup. · Pitfall: wrong polar-line assignment. · Not a sole operative mandate.
SourceR.E.N.A.L. nephrometry score (Kutikov & Uzzo)
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
Sum 4–12.
When to use
When to use: planning partial vs radical nephrectomy counseling.
How it works
R+E+N+L (each 1–3) plus a/p/x descriptor and optional hilar h.
Key points
- Sum 4–12.
- a/p/x suffix.
- Next: PADUA / surgeon judgment.
References
- R.E.N.A.L. nephrometry score (Kutikov & Uzzo)
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Radius (maximal diameter) | >4 and <7 cm (2) |
|---|---|
| Exophytic / endophytic | <50% exophytic (2) |
| Nearness to collecting system / sinus | >4 and <7 mm (2) |
| Anterior / posterior descriptor | p — posterior |
| Location relative to polar lines | Crosses polar line (2) |
| Hilar touching main artery/vein | No |
→RENAL8p
- Numeric sum (R+E+N+L)：8
- Cue：7–9 — moderate complexity
| Radius (maximal diameter) | ≤4 cm (1) |
|---|---|
| Exophytic / endophytic | ≥50% exophytic (1) |
| Nearness to collecting system / sinus | ≥7 mm (1) |
| Anterior / posterior descriptor | a — anterior |
| Location relative to polar lines | Entirely above/below polar line (1) |
| Hilar touching main artery/vein | No |
→RENAL4a
- Numeric sum (R+E+N+L)：4
- Cue：4–6 — low complexity
Verification & sources · governance
FAQ
Frequently asked questions
- Does R.E.N.A.L. Nephrometry Score upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is R.E.N.A.L. Nephrometry Score calculated in practice? Can you show a worked example?
- Inputs: Radius (maximal diameter) >4 and <7 cm (2), Exophytic / endophytic <50% exophytic (2), Nearness to collecting system / sinus >4 and <7 mm (2), Anterior / posterior descriptor p — posterior, Location relative to polar lines Crosses polar line (2), Hilar touching main artery/vein No → Result: RENAL 8p（Numeric sum (R+E+N+L): 8, Cue: 7–9 — moderate complexity） Inputs: Radius (maximal diameter) ≤4 cm (1), Exophytic / endophytic ≥50% exophytic (1), Nearness to collecting system / sinus ≥7 mm (1), Anterior / posterior descriptor a — anterior, Location relative to polar lines Entirely above/below polar line (1), Hilar touching main artery/vein No → Result: RENAL 4a（Numeric sum (R+E+N+L): 4, Cue: 4–6 — low complexity）