Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Currarino triad ?
    ### Response:
    Currarino triad or syndrome is an autosomal dominant hereditary condition which is characterized by the triad of sacral agenesis abnormalities (abnormally developed lower spine), anorectal malformation (most commonly in the form of anorectal stenosis) and presacral mass consisting of a teratoma, anterior sacral meningocele or both.
    