<prompt> All are true about carcinoma oesophagus exceptSquamous cell is most common type of cancerSquamous is increasing in incidenceSquamous is more common in upper two-third of oesophagusAdenocarcinoma is common in lower third of oesophagus  <response>: Squamous cell carcinoma generally affects the upper two-thirds of the oesophagus and adenocarcinoma the lower third. Worldwide, squamous cell cancer is most common, but adenocarcinoma predominates in the west and is increasing in incidence.Ref: Bailey and Love 27e pg: 1086 