RECIST 1.0:

• At baseline, measurable tumor lesions will be categorized as follows:
  • Lesions that can be accurately measured in at least one dimension [longest diameter to be recorded] as ≥ 20 mm with conventional techniques or
  • ≥ 10 mm with spiral CT scan

RECIST 1.1:

• Tumor lesions: Must be accurately measured in at least one dimension (longest diameter in the plane of measurement is to be recorded) with a minimum size of:
  • 10 mm by CT scan (irrespective of scanner type) and MRI (no less than double the slice thickness and a minimum of 10 mm)
  • 10 mm caliper measurement by clinical exam (when superficial)
  • 20 mm by chest X-ray (if clearly defined and surrounded by aerated lung)