Because the patient refused a further operation, we decided to initiate pharmacological treatment with cinacalcet. After 1 month of therapy, serum calcium and PTH levels returned to normal. The patient has now been closely monitored for 1 year. During this time calcium and PTH levels remained normal, morphologically the parathyroid nodular lesion remained unchanged and cinacalcet was well tolerated without the occurrence of adverse events. Cinacalcet could represent an important pharmacological intervention in MEN1-associated primary hyperparathyroidism before surgery and in postsurgical recurrences.
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