<prompt> Single Drug regimen for Carcinoma Esophagus which shows tumor size decrease of around 15-20 is:BleomycinCisplatinDocorubicinVincristine  <response>: Ans. b CisplatinRef: Sabiston 20th Edition, Page 1077 Cisplatin based chemotherapy has been used in those days as single drug regimen The survival benefit of chemotherapy persisted at the updated median follow-up duration of 6 years, with 5-year survival rates of 23 with chemotherapy plus surgery and 17 with surgery alone. 