Randomised controlled trialindependent cross-checkabstract only checked★ key study I-INTB-05 in-depth review
Removing all armpit lymph nodes did not improve survival
Twenty-five-year follow-up of a randomized trial comparing radical mastectomy, total mastectomy, and total mastectomy followed by irradiation.
Overview
Fisher B et al.. N Engl J Med 2002 · PMID 12192016 · DOI 10.1056/NEJMoa020128
Over 25 years, women without routine axillary dissection survived as long as those with radical mastectomy.
Does the study support the specific claim? Partly · Methodological quality: high
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Compare radical vs less extensive breast surgery
- How was the study done?
RCT
- How many people, animals or samples were studied?
1665 women
- What was actually found?
No survival difference
- How large was the observed effect?
HR 1.03-1.08, CIs include 1
- What do the results mean in everyday life?
Taking out more lymph nodes did not make women live longer; the breast tumour was still removed in all groups.
- What are the study's limitations?
Old trial; abstract only
- What does it say about Elawady's specific claim?
Partly supports his criticism of lymph-node 'cleaning'; contradicts rejecting tumour removal.
- Do the results apply to Germany and Europe?
High
- What can explicitly not be concluded from this study?
Cannot conclude that tumour surgery is unnecessary.
Scientific in-depth review
1. Full reference
- Authors
- Fisher B et al.
- Journal
- N Engl J Med
- Year
- 2002
- Identifier
- PMID 12192016 DOI 10.1056/NEJMoa020128
- Verification
- verified – PubMed efetch 2026-10-25
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
U.S. Gov't P.H.S. support (publication type); no COI statement in record
2. Research question
Is less extensive surgery (without axillary dissection), with or without radiation, as effective as Halsted radical mastectomy?
3. Study design and population
- Study design
- Randomised controlled trial – Randomised controlled trial (NSABP B-04), 25-year follow-up
- Population
1079 women with clinically node-negative and 586 with clinically node-positive breast cancer
- Country
not stated in abstract (NSABP trial)
- Period
initiated 1971; 25-year follow-up
- Sample size
1665
- Inclusion and exclusion criteria
Clinically negative or positive axillary nodes
4. Methods and endpoints
- Exposure / intervention
Total mastectomy without axillary dissection (with or without irradiation; axillary dissection only if nodes became positive)
- Comparator
Radical mastectomy (including axillary dissection)
- Endpoints
Disease-free, relapse-free, distant-disease-free and overall survival
- Statistical methods
Kaplan-Meier, hazard ratios
5. Actual results
- Results
No significant differences in disease-free, relapse-free, distant-disease-free or overall survival. Node-negative: HR for death total mastectomy plus radiation vs radical mastectomy 1.08 (95% CI 0.91-1.28); total mastectomy without radiation vs radical 1.03 (0.87-1.23). Node-positive: total mastectomy plus radiation vs radical 1.06 (0.89-1.27).
- Absolute risks
not reported in abstract
- Authors' conclusion
No advantage from radical mastectomy; no significant survival advantage from removing occult positive nodes at initial surgery or from radiation, although differences of a few percentage points cannot be excluded.
6. Strengths
- Randomised
- Very long follow-up
- Landmark trial
7. Weaknesses
- Older surgical and systemic-therapy context
- Abstract only read
8. Risk of bias
- Orienting tool
- RoB 2
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- some concerns
- Rationale
Open surgical trial; outcomes are hard endpoints.
9. Assessment of the statistical interpretation
HRs close to 1 with CIs excluding large differences; small differences cannot be excluded.
10. Relevance to the specific claim
Supports the narrower point that routine removal of all axillary lymph nodes does not improve survival in breast cancer; all arms still removed the tumour (mastectomy).
11. Independent contrary findings
Nodal status remains prognostic and guides therapy.
12. Transferability to Germany and Europe
High; same principles in EU guidelines.
13. Overall methodological judgement
Key evidence that oncology itself de-escalated lymph-node surgery based on trials.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | high |
| Risk of bias | some concerns |
| Precision of results | moderate |
| Directness | direct |
| Reproducibility | replicated |
| Consistency with the overall evidence | consistent |
| Regional transferability | high |
| Adequacy of the interpretation (by the archive) | not applicable |
14. Open questions
Applicability to modern systemic therapy.
15. Linked fact checks
- Surgical oncologists do not understand what tumours are: they remove the tumour and 'clean out' the lymph nodes, which he regards as wrong. – Studies with mixed or unclear results