- Patients must have measurable disease per RECIST 1.1; measurable lesions are defined as those that can be accurately measured in at least one dimension (longest diameter to be recorded as >= 10 mm (>= 1 cm) with computed tomography (CT) scan, magnetic resonance imaging (MRI), or calipers by clinical exam; to be considered pathologically enlarged and measurable, a lymph node must be >= 15 mm (>= 1.5 cm) in short axis