Patients will be taken off study if their disease gets worse or intolerable side effects occur. Patients will be seen one month after the last cycle of chemotherapy, then every 3-4 months from then on for 2 years. At each visit, patients will have blood tests and a physical exam. Computed tomography (CT) scans will be ordered only if it is suspected that the disease has come back. All patients will be followed for a maximum of 2 years after their therapy is completed.