Table 1 Choi response criteria (Choi et al, 2007)

From: Choi response criteria for early prediction of clinical outcome in patients with metastatic renal cell cancer treated with sunitinib

Response

Definition

CR

Disappearance of all lesions

 

No new lesions

PR

A decrease in size ⩾10% or a decrease in tumour attenuation (HU) ⩾15% on CT

 

No new lesions

 

No obvious progression of non-measurable disease

SD

Does not meet criteria for CR, PR, or PD

 

No symptomatic deterioration attributed to tumour progression

PD

An increase in tumour size ⩾10% and does not meet criteria of PR by tumour attenuation on CT

 

New lesions

  1. Abbreviations: CR=complete response; PR=partial response; SD=stable disease; PD=progressive disease; HU=Hounsfield unit.
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