M.B. is a 71-year-old male who presented in January 2001 with renal cell carcinoma metastatic to paraesophageal, peri-aortic, hilar, and mediastinal lymph nodes. He was started on interleukin-2 (IL-2, aldesleukin) 18 million units, interferon alpha 10 million units, and 5-fluorouracil 1 g, all administered by IV continuous infusion for 96 hours every three weeks.