Tag Sarah J. Atkinson MD

I Esophageal Anatomy 1. The esophagus is a muscular pump bordered by two sphincters, the upper esophageal sphincter (UES) and lower esophageal sphincter (LES). Its function is to transport food and liquids in a unidirectional movement, and it possesses no…

I Epidemiology 1. Worldwide, it is estimated that 300,000 people are living with oral cavity and pharynx cancer. Approximately 48,000 head and neck cancers are diagnosed in the United States annually, representing nearly 3% of cancers diagnosed in North America…