M.C. site of Ca esophagus is
tumors of oesophagus usually occurs in distal third of oesophagus and may invade gastric cardia ROBBINS TEXT BOOK OF PATHOLOGY 9TH EDITION PD NO.662
Middle 1/3 rd
Upper 1/3 rd
Lower 1/3rd
Lower end of esophagus
G.I.T