A 35-year-old man who presents with a neck mass is found to have a serum calcium level of 11.8 mg/dL and periodic elevation of his blood pressure. Extensive workup reveals the presence of a medullary carcinoma of the thyroid, a pheochromocytoma, and hyperplasia of the parathyroid glands. Which of the following is the most likely diagnosis? a. Multiple endocrine neoplasia syndrome type 2A b. Multiple endocrine neoplasia syndrome type 2B c. Multiple endocrine neoplasia syndrome type 4 d. Multiple endocrine neoplasia syndrome type 1 e. Familial medullary thyroid carcinoma.
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These findings are consistent with Multiple Endocrine Neoplasia (MEN) syndromes. Show more…
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