Prognostic evaluation of preoperative combined treatment for advanced cancer in the lower rectum with radiation, intraluminal hyperthermia, and 5-fluorouracil suppository

Background Since 1977, we have studied preoperative treatments using 5-fluorouracil (5-FU) suppositories alone or in combination with radiation to reduce local recurrence and improve survival of patients with rectal cancer. patients and methods: We developed a novel preoperative therapy combining radiation, intraluminal hyperthermia, and 5-FU suppositories. Thirty-five patients with rectal cancer underwent surgery after this treatment, and 41 patients underwent surgery without pretreatment. Results The patients who underwent preoperative combination treatment showed significant tumor reduction; 2 achieved microscopically complete regression. In comparison with the patients who underwent surgery without pretreatment, the preoperative treatment group had a 16.7% lower local recurrence rate (10.4% versus 27.1%) and an improved survival rate (81.8% versus 67.6%). Conclusions Preoperative combination therapy is a promising modality for the patients with resectable advanced cancer in the lower rectum.