Esophageal complications from combined chemoradiotherapy (CCRT) were analyzed in 55 patients with limited non-small cell lung cancer. CCRT consisted of chemotherapy (cyclophosphamide, doxorubicin (Adriamycin), and cisplatin: CAP) and chest irradiation (5000 rad in 25 fractions/5 weeks). Forty-five patients received two courses of CAP, followed by five weekly courses of low dose CAP and irradiation followed by maintenance courses of CAP (Group 1). Ten patients received concomitant CCRT from the onset of treatment (Group 2). Esophagitis occurred in 80% of all patients. Severe esophagitis occurred in 27% of patients of Group 1 and 40% of patients of Group 2. Esophageal stricture or fistula developed in 1 of 45 (2%) patients in Group 1, and 3 of 10 (30%) patients in Group 2 (p less than 0.025). Weekly low-dose chemotherapy administered concomitantly with chest irradiation (R) at the onset of treatment significantly increases esophageal complications. A review of the literature suggests that CCRT may be used safely with split courses of R. The duration between onset of chemotherapy either before or after R should be greater than one week.
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