Purpose: Patients with locally advanced and metastatic esophageal cancer are usually affected by cancer-related symptoms, which worsen their performance status and quality of life. The aim of this study was to determine the efficacy of short-course accelerated radiation therapy for symptomatic palliation in a low resourced setting where only a 2-dimensional radiation therapy (RT) technique was available.
Methods and materials: A phase II trial based on Simon's 2-stage design was planned. A total dose of 12 Gy in 4 fractions, twice per day, over 2 days, ≥8 hours apart, using a 2-dimensional conventional RT technique was delivered with a Cobalt 60 unit (Equinox, Best Theratronics, Ottawa, Ontario). Symptoms were graded using the International Atomic Energy Agency scoring system.
Results: A total of 17 patients were treated (male/female = 10/7; median age, 50.0 years; range, 27-78 years; histology: 6 adenocarcinomas and 11 squamous cell carcinomas; tumor site: 4 gastresophageal junction and 13 esophagus). The most frequent baseline symptoms were dysphagia or regurgitation (100%), odynophagia (76%), and chest or back pain (53%). At 1 month after RT, all patients were alive with palliative response rates (complete plus partial) for dysphagia, regurgitation, odynophagia, and chest or back pain of 76%, 82%, 69%, and 56%, respectively. No patients presented acute ≥G3 toxicity.
Conclusions: Short-course accelerated radiation therapy treatment, planned and delivered using a conventional 2-dimensional RT technique, was effective and well tolerated for the symptomatic palliation of locally advanced or metastatic esophageal cancer. This schedule may be useful for RT centers in developing countries to reduce treatment times, costs, and patient waiting times before treatment.
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