Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Vulvar Cancer ?
    ### Response:
    Key Points
                    - Vulvar cancer is a rare disease in which malignant (cancer) cells form in the tissues of the vulva.    - Having vulvar intraepithelial neoplasia or HPV infection can affect the risk of vulvar cancer.    - Signs of vulvar cancer include bleeding or itching.
    