<prompt> Squamous cell carcinomas of the esophagus most commonly occurAt the GEJMiddle 13rdIn the lower thoracic esophagusEvenly distributed throughout the esophagus  <response>: - MC type of CA Esophagus World Wide - Squamous cell carcinoma- MC type of CA in western countries - Adenocarcinoma- MC site of Squamous cell carcinoma - Middle 13rd- MC site of Adenocarcinoma - Lower 13rd- MC site of CA Esophagus overall - Middle 13rd- SCC - more common in low socio-economic status- Adenocarcinoma - more common in high socio-economic status 