Clinical calculator summary
USC Van Nuys Prognostic Index
Clinical calculator summary
USC Van Nuys Prognostic Index
A four-factor score using DCIS size, margin width, pathologic classification, and age to frame local-recurrence risk.
Evidence-based context for fast calculator use
- Purpose:
- Support multidisciplinary discussion of local treatment intensity after excision for DCIS
- Population:
- Patients with ductal carcinoma in situ after excision with complete pathology data
- Factors:
- DCIS size, Margin width, Grade and necrosis, Age
- Reference:
- Silverstein et al., Cancer 1996; updated USC-VNPI publications
Van Nuys Prognostic Index (USC-VNPI)
Clinical Context & Background
Sum of scores (1-3) for: Size, Margin Width, Pathologic Classification, and Age.Reference Data
| Total Score | Risk of Recurrence | Treatment Suggestion |
|---|---|---|
| 4 - 6 | Low Risk | Excision alone may be sufficient. |
| 7 - 9 | Intermediate Risk | Excision + Radiation. |
| 10 - 12 | High Risk | Mastectomy or Excision + Radiation. |
Clinical Workflow
Use, Interpret, And Continue The Patient Pathway
Expand for workflow guidance, limitations, examples, and related next steps.
Clinical Workflow
Use, Interpret, And Continue The Patient Pathway
Expand for workflow guidance, limitations, examples, and related next steps.
When To Use
- Use for ductal carcinoma in situ after excision when size, margin width, grade/necrosis, and age are known.
- Most helpful when discussing local recurrence risk and whether excision alone is enough or radiation/surgery escalation should be considered.
- Use alongside DCIS nomograms and shared decision-making when treatment tradeoffs are preference-sensitive.
How To Interpret
- Scores 4-6 suggest a lower local recurrence profile, 7-9 intermediate risk, and 10-12 higher risk.
- Margin width and high-grade or necrotic pathology can shift the score quickly, so verify the pathology report before counseling.
- The result frames local therapy intensity; it does not estimate distant metastatic risk for invasive breast cancer.
What To Do Next
- Review margins, imaging-pathology concordance, patient age, endocrine receptor status, and patient preference.
- Compare with an individualized DCIS nomogram when available, especially for borderline scores.
- Use AJCC staging or invasive breast calculators only if an invasive component is present.
Limitations
- Do not use for invasive breast cancer, recurrent DCIS without specialist review, or incomplete excision-pathology data.
- Treatment suggestions are historical risk-stratification anchors and should not override contemporary multidisciplinary guidelines.
- The score does not replace radiation oncology, breast surgery, pathology, and patient-centered discussion.
Validated Population
Patients with breast ductal carcinoma in situ after local excision with known size, margins, pathologic classification, and age.
Example use
A 65-year-old with 10 mm non-high-grade DCIS, no necrosis, and margins of 10 mm or more scores 4, supporting a lower local-recurrence discussion; a younger patient with large high-grade DCIS and close margins would move into a higher-risk treatment conversation.
Related Tools
Frequently Asked Questions
Is the VNPI intended for invasive breast cancer?
No. The VNPI is designed for ductal carcinoma in situ and should not be used to estimate distant recurrence or guide systemic therapy for invasive breast cancer.
Does a VNPI treatment band automatically determine treatment?
No. Its historical treatment bands should be integrated with contemporary guidelines, margin and imaging review, receptor status, comorbidity, and patient preferences.
Evidence-based oncology decision support. Verify with clinical guidelines.