Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of White sponge nevus of cannon ?
    ### Response:
    What are the signs and symptoms of White sponge nevus of cannon? The Human Phenotype Ontology provides the following list of signs and symptoms for White sponge nevus of cannon. If the information is available, the table below includes how often the symptom is seen in people with this condition.
    