- Patients must have measurable or non-measurable disease; patients must have a chest/abdominal/pelvis computed tomography (CT) scan (or positron emission tomography [PET]/CT of diagnostic quality, conventional or spiral) prior to registration; if the patient is unable to undergo CT with IV contrast due to allergy or renal insufficiency, a non-contrast CT may be performed; all scans needed for assessment of measurable disease must be performed within 28 days prior to registration; non-measurable disease must be assessed within 42 days prior to registration; all disease must be assessed and documented on the Baseline Tumor Assessment Form