Investigational 
• Chemotherapy is under clinical evaluation, and a variety of drugs have been found to be useful in patients who
  have residual or recurrent disease following surgery or radiation therapy . The combination of cisplatin +
  doxorubicin + vincristine + Cytoxan produced a 91 percent response rate (47 percent complete) in one study.
• In one trial, almost half of the patients treated with a four-drug combination of vincristine + Cytoxan +
  lomustine + prednisone had complete responses. The combination of cisplatin + Adriamycin + Cytoxan has
  produced a 70 percent remission rate.