Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Ovarian Epithelial, Fallopian Tube, and Primary Peritoneal Cancer ?
    ### Response:
    Key Points
                    - Ovarian epithelial cancer, fallopian tube cancer, and primary peritoneal cancer are diseases in which malignant (cancer) cells form in the tissue covering the ovary or lining the fallopian tube or peritoneum.     - Ovarian epithelial cancer, fallopian tube cancer, and primary peritoneal cancer form in the same type of tissue and are treated the same way.
    