Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Esophagus Disorders ?
    ### Response:
    The esophagus is the tube that carries food, liquids and saliva from your mouth to the stomach. You may not be aware of your esophagus until you swallow something too large, too hot or too cold. You may also become aware of it when something is wrong.     The most common problem with the esophagus is gastroesophageal reflux disease (GERD).
    