Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Parathyroid Cancer ?
    ### Response:
    Signs and symptoms of parathyroid cancer include weakness, feeling tired, and a lump in the neck. Most parathyroid cancer signs and symptoms are caused by the hypercalcemia that develops. Signs and symptoms of hypercalcemia include the following:         -  Weakness.
    