<prompt> The most common site of esophageal adenocarcinoma is?Middle 13rdUpper 13rdLower 13rdLower end of esophagus  <response>: Oesophageal adenocarcinoma usually occurs in the distal one-third of the oesophagus In contrast, half of squamous cell carcinomas occur in middle third of esophagus. Ref: TEXTBOOK OF ROBBINS BASIC PATHOLOGY NINTH EDITION PAGE.562 IMAGE Ref: TEXTBOOK OF HARSH MOHAN 6TH EDITION Fig.20.4 pg :541 