Barrett's esophagus (BE) is a change in the cellular structure of the lower
esophagus believed by many to be caused by frequent acid exposure. The con
dition is troublesome because of a tendency toward cell proliferation, dysp
lastic transformation, and cancerous changes within the lesions. It is spec
ulated that the pronounced increase in esophageal adenocarcinoma during the
past 25 years may be attributable to acid reflux and associated BE. Strict
acid control may cause lesion regression in these patients. However, pH mo
nitoring to confirm adequate acid control is essential, and more than 1 dru
g may be needed to achieve adequate acid control and manage many patients,
More research is needed to determine whether aggressive acid control reduce
s the dysplasia and cancer risk associated with BE.