Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Paget's Disease of Bone ?
    ### Response:
    An Underdiagnosed Disease Experts believe that Paget's disease is underdiagnosed; people with a mild case and no symptoms may never know they have the disease. Or, they may receive a diagnosis by accident when x-rays or other laboratory tests done for another reason reveal Paget's disease.
    