Phase II Evaluation of Cisplatin and 5-Fluorouracil in Advanced Squamous Cell Carcinoma of the Esophagus: A Japanese Esophageal Oncology Group Trial

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Abstract
Thirty-nine patients with advanced measurable squamous cell carcinomas were treated with two or more courses of 70 mg cisplatin/m2 on day 1 and 700 mg infused 5-fluorouracil/m2 on days 1—5 every 21 days. The overall response rate was 35.9 (95% confidence limits, 24.8–55.1)%. Responses were seen in primary sites in the esophagus of five patients, in the lung of seven, the liver of one and the mediastinal lymph nodes of one. The average response duration was 3.5 (range 1–12) mo for patients who achieved partial response. The average survival time after the first administration was 9.5 mo for patients who responded to the treatment whereas, for those who did not, it was 5.6 mo. The major form of toxicity was myelosuppression and there were six patients with grade 3 toxicity and one with grade 4. The present study was designed to evaluate the effectiveness of combined cisplatin and 5-fluorouracil for advanced squamous cell carcinoma, and the results showed that it had a reasonable effect and might possibly be used as a postoperative chemotherapy because of its mild side effects.

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