RECIST 1.0:

• RECIST 1.0 has no specific recommendations. Perceptive has defined modifications for this topic according to our experience and current scientific knowledge.

RECIST 1.1:

• All target lesions (nodal and non-nodal) recorded at baseline should have their actual measurements recorded at each subsequent evaluation, even when very small (e.g. 2mm)
• However, if target lesions or lymph nodes become so faint on CT scan that the radiologist may not feel comfortable assigning an exact measure and may report them as being ‘too small to measure’ and a default value of 5mm should be assigned