This overview in the medical literature by Lagergren et al is available as an open access (free) article from the Kings College (London) Research Portal. It is very thorough, citing all the main chemo trials (with the exception of FLOT) and surgical options.
Citation: Lagergren, J., Smyth, E., Cunningham, D., & Lagergren, P. (2017). Oesophageal cancer. DOI: 10.1016/S0140-6736(17)31462-9