Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Fallopian tube cancer ?
    ### Response:
    Fallopian tube cancer develops in the tubes that connect a woman's ovaries and uterus. It is very rare and accounts for only 1-2% of all gynecologic cancers.  Fallopian tube cancer occurs when normal cells in one or both tubes change and grow in an uncontrolled way, forming a mass called a tumor.
    