Table 2.

Comparison of the RECIST and the WHO criteria

RECISTWHO
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
Response
    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