Brad Johnson (BJ) is a 54-year-old diagnosed with pituitaryadenoma. He undergoes a transsphenoidal hypophysectomy to removethe tumor.

  • Describe the symptoms that likely led to Brad’s diagnosis.
  • After surgery, Brad develops polyuria and polydipsia. His urineis found to be very dilute and he has hypernatremia. Explain whythis happened and what is causing each of these symptoms.
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