Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Ghosal hematodiaphyseal dysplasia ?
    ### Response:
    Ghosal hematodiaphyseal dysplasia is a rare inherited condition characterized by abnormally thick bones and a shortage of red blood cells (anemia). Signs and symptoms of the condition become apparent in early childhood.  In affected individuals, the long bones in the arms and legs are unusually dense and wide.
    