Patients receive fluorouracil IV continuously over 24 hours on days 1-5 and doxorubicin HCl liposome IV over 30 minutes on day 6. Beginning on day 7, patients receive heat applied for 6-24 hours (in 6-hour sequential treatments) using a mild hyperthermia-induction device. Treatment repeats every 4-5 weeks for a total of 4 courses. Patients who achieve less than a complete response but have no disease progression may receive additional courses of chemotherapy alone.