Esophageal diseases are amongst the most common gastrointestinal illnesses encountered by both the gastroenterologist as well as the primary care physician. Gastroesophageal reflux symptoms affect 20% of adult Americans on a weekly or more frequent basis, and Barrett's esophagus, a pre-cancerous lesion of the distal esophagus associated with chronic GERD, is prevalent in 2-6% of the adult population. Additionally, there have been remarkable advances in the care of esophageal diseases in the last several years, with the development of new imaging modalities, new physiological tests, and...