Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Gardner syndrome ?
    ### Response:
    What are the signs and symptoms of Gardner syndrome? The signs and symptoms of Gardner syndrome vary from person to person. It is a form of familial adenomatous polyposis (FAP), which is characterized primarily by hundreds to thousands of noncancerous (benign) polyps in the colon that begin to appear at an average age of 16 years.
    