- Bidimensionally measurable disease** by CT scan, MRI, or physical exam, with >= 1 disease site meeting 1 of the following criteria: Lymph nodes >= 1.5 cm x 1.5 cm by spiral CT scan, Non-nodal regions >= 1 cm x 1 cm by MRI, CT scan, or physical exam [Note: **Bone lesions are not considered bidimensionally measurable disease]