Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Parathyroid Cancer ?
    ### Response:
    Tests that examine the neck and blood are used to detect (find) and diagnose parathyroid cancer. Once blood tests are done and hyperparathyroidism is diagnosed, imaging tests may be done to help find which of the parathyroid glands is overactive. Sometimes the parathyroid glands are hard to find and imaging tests are done to find exactly where they are.
    