Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Marden-Walker syndrome ?
    ### Response:
    Marden-Walker syndrome is a connective tissue disorder characterized by a mask-like face with blepharophimosis (a narrowing of the eye opening), micrognathia, cleft or high-arched palate, low-set ears, congenital joint contractures, decreased muscular mass, failure to thrive and psychomotor retardation (a generalized slowing down of physical reactions, movements, and speech).
    