Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Adenocarcinoma of the appendix ?
    ### Response:
    Cancer of the appendix is very rare and is typically found incidentally during appendectomies, in about 1% of the cases. According to a report published by the National Cancer Institute, using the Surveillance, Epidemiology, and End Results (SEER) database, appendix cancer account for about 0.
    