- Patients must have measurable disease defined as lesions that can be accurately measured in two dimensions by computed tomography (CT), magnetic resonance imaging (MRI), medical photograph (skin or oral lesion), plain x-ray, or other conventional technique and a greatest transverse diameter of 1 cm or greater; or palpable lesions with both diameters >= 2 cm or evaluable disease in the bone marrow; patients must have a CT of chest, abdomen, and pelvis within 28 days of enrollment; patients with evidence of adenopathy in the neck must have a CT of the neck; (Note: Patients with CLL do not need to have radiographically measurable disease as this is not required to measure response in this disease setting)