 - Measurable disease, as defined in Appendix C i.e. CT scans showing at least 2 or more clearly demarcated lesions with a long axis 1.5 cm and a short axis diameter 1.0 cm, or 1 clearly demarcated lesion with a long axis 2.0 cm and a short axis diameter 1.0 cm. These lesions must be FDG 18F-2-fluoro-2-deoxy-D-glucose fluorodeoxyglucose-positive 