Prognostic tool for evaluation of aggressive lymphomas.
International Prognostic Index (IPI)-Score 0-5
Age <60 or ≥60 years, Performance status 0-1 or >1), Stage (localized or disseminated), Number of extranodal sites (0-1 or >1), LDH level (normal or elevated)
Low risk group score, 0 or 1, Low-intermediate risk group score, 2, High-intermediate risk group. score 3, High risk group score, 4 or 5