Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Popliteal pterygium syndrome ?
    ### Response:
    Popliteal pterygium syndrome is a condition that affects the development of the face, skin, and genitals. Most people with this disorder are born with a cleft lip and/or a cleft palate. Affected individuals may have depressions (pits) near the center of the lower lip and small mounds of tissue on the lower lip.
    