Table 2.

Comparison of the RECIST and the WHO criteria

Target lesionsMeasurable lesions to a maximum of 5 (2 per organ)All measurable lesions
Type of measurementUnidimensionalBidimensional
Tumor burden assessmentSum of greatest diameter of target lesionsSum of products of maximum perpendicular diameters
    CRResolution of all diseaseResolution of all disease
    PR≥30% decrease in sum>50% decrease
    SDNeither PR nor PD metNeither PR nor PD met
    PD20% increase AND > 5 mm absolute increase OR new lesion25% increase OR new lesion