4. Disease status must be that of measurable disease as defined by RECIST criteria:Measurable lesions: Lesions that can be accurately measured in at least one dimension by any of the following: - CT of abdomen, pelvis or thorax, if the longest diameter to be recorded is at least 10 mm with spiral CT- Chest x-ray, if the lung lesion to be recorded is clearly defined and surrounded by aerated lung and the diameter to be recorded is at least 20 mm- Physical examination, if the clinically detected lesions are superficial (e.g., skin nodule and palpable lymph nodes) and at least 10 mm