 - Previous or concurrent cancer that is distinct in primary sit or histology from the cancer being evaluated in this study EXCEPT cervical carcinoma in situ, adequately treated basal cell carcinoma, superficial bladder tumors Ta Noninvasive papillary carcinoma, Tis Carcinoma in situ: flat tumor and T1 Tumor invades subepithelial connective tissue or any cancer curatively treated 3 years prior to study entry 