Diagnostic performance and clinical implications of the World Health Organization Reporting System for Lymph Node Cytopathology
A new standardized system for reading lymph node biopsies achieves 96% accuracy with flow cytometry, improving confidence in cancer diagnosis.
In a large single-center validation of the new WHO lymph node cytopathology reporting system (n=2,274 FNABs), overall diagnostic accuracy was 91.8%, rising to 95.9% with flow cytometry. The study provides practical thresholds: a 10mm nodal size as a workup trigger, with risk of malignancy and risk of lymphoma varying by anatomic site and clinical indication.
What the study was
- Study design
- Retrospective validation study
- Population
- Consecutive lymph node fine-needle aspiration biopsy cases at a university hospital (Lund, Sweden)
- Sample size
- 2274
- Category
- Diagnostics
- Maturity
- Validated
- Journal
- Journal of the American Society of Cytopathology
Why it surfaced
Large validation study (n=2274) of WHO standardized lymph node reporting system relevant to lymphoma diagnosis; provides practice-relevant thresholds (10mm cutoff, site-specific ROM data). Single-center limits generalizability.
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