Revision 2 for 'WHO criteria in tumor response'

All Revisions

Who criteria in tumor repsonse

The WHO criteria introduced the concept of assessing tumor burden on the basis of the sum of the products of diameters (SPD) (ie, longest overall tumor diameter and longest diameter perpendicular to the longest overall diameter) and determining response to therapy by evaluating the changes from baseline during treatment. 

Complete response

  • No lesions detected for at least 4 weeks 

Partial response

  • 50% decrease in sum of the products of diameters  (SPD) (confirmed at 4 weeks) 

Progressive disease

  • ≥25% increase in SPD in one or more lesions
  • New lesions 

Stable disease

  • None of the above

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.