This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': "All except one are true regarding Barret's esophagus? \nSelect and explain. \nA. More incidence of sq. cell ca, B. Metaplasia, C. Columnar epithelium, D. Involves lower oesophagus", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' ie More incidence of sq.cell ca There is increased incidence of adenocarcinoma in Barret's esophagus. o Barrett's esophagus is a premalignant condition with increased incidence of adenocarcinoma of esophagus. o Also remember Barrett's esophgus is the single most impoant risk factor for adenocarcinoma of esophagus . The adenocarcinoma develops at the squamo -Columnamr junction (-85%) or within 2cm of the junction.", 'role': 'assistant'}]