Japanese Journal of Clinical Oncology 31:589-595 (2001)
© 2001 Foundation for Promotion of Cancer Research
Therapeutic Results of Alternating Chemoradiotherapy for Nasopharyngeal Cancer using Cisplatin and 5-Fluorouracil: Its Usefulness and Controversial Points
Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
Background: The present study was conducted to evaluate the therapeutic results of alternating chemoradiotherapy for locally advanced nasopharyngeal cancer (NPC).
Methods: The subjects consisted of six patients with stage III nasopharyngeal cancer and 26 patients with stage IV nasopharyngeal cancer. Using 6 MV photons, radiotherapy was performed at an exposure of 1.8–2.0 Gy five times per week. That is, a total absorbed dose of 36–40 Gy was irradiated between the base of the skull and supraclavicular fossa. After decreasing the irradiation field, an absorbed dose of 26–30 Gy was additionally given thereafter. One course of chemotherapy consisted of the administration of 5-fluorouracil (5-FU) at a dose of 700 mg/m2/24 h for 5 days (days 1–5) and cisplatin (CDDP) at a dose of 50 mg/m2/24 h for 2 days (days 6–7) and a total of 2–3 courses of chemotherapy were performed. During the alternating chemoradiotherapy, chemotherapy was performed initially and 3–5 days after completing the chemotherapy, radiotherapy was performed for 3–4 weeks. Thereafter, chemotherapy and radiotherapy were performed alternately.
Results: The scheduled courses of alternating chemoradiotherapy were completed in 30 (94%) of 32 patients. Although one patient developed shock induced by metal allergy to CDDP, no severe adverse effects were noted in any other patients. In these 32 patients, the overall 5-year survival rate was 75% (95% confidence interval: 60–90%) and the progression-free survival rate was 63% (95% CI: 46–89%).
Conclusions: This method of alternating chemoradiotherapy yielded higher or at least similar survival rates and lower toxicities than concurrent chemoradiotherapy and is worth trying in a multi-institutional study.
+ For reprints and all correspondence: Nobukazu Fuwa, Department of Radiation Oncology, Aichi Cancer Center Hospital, 1–1 Kanokoden, Chikusa-ku, Nagoya, Japan. E-mail: nfuwa@aichi-cc.jp
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