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Haematology A

Deauville Score (5-Point Scale) for Lymphoma Response

5-point scale for interpreting PET-CT scan response in lymphoma. Compares residual FDG uptake to mediastinal blood pool (MBP) and liver as reference structures.

Score interpretation

Complete Metabolic Response (CMR) 1–2

Deauville 1–2. Complete metabolic response.

→ Continue or complete planned treatment. Continue surveillance.

Complete Metabolic Response (Deauville 3) 3

Lugano 2014: score 3 is a complete metabolic response at interim and end of standard treatment. In trials of PET-guided de-escalation it may be judged an inadequate response, to avoid under-treatment.

→ Continue standard therapy; follow the protocol if treatment is PET-adapted. Interpret uptake at sites with high physiological uptake (Waldeyer's ring, extranodal sites) in context.

Deauville 4 — Interpret Against Baseline 4

Uptake moderately above liver. Lugano 2014: lower than baseline = partial metabolic response (at end of treatment = residual disease); no significant change = no metabolic response; higher or new lesions = progressive metabolic disease.

→ Discuss at MDT; compare with the baseline scan; consider biopsy at end of treatment before salvage therapy. Context-dependent (interim vs end-of-treatment).

Deauville 5 — Interpret Against Baseline 5

Uptake markedly above liver and/or new lesions. Lugano 2014: lower than baseline = partial metabolic response; unchanged = no metabolic response; higher uptake or new FDG-avid lesions = progressive metabolic disease.

→ Biopsy to confirm if clinically appropriate. If refractory or progressive: salvage therapy (e.g., DHAP, GDP, ICE) and stem cell transplant work-up in eligible patients.

Interpretation bands for the Deauville Score. Apply clinical judgement and local guidance.

References

Related

Curated clinical cross-links plus same-class fallbacks.

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.