Papillary thyroid carcinoma, parathyroid adenoma, and unexplained hypercalcitoninemia: an unusual presentation of multiple endocrine neoplasia type 2A?

Abstract excerpt

Multiple endocrine neoplasia type 2 (MEN 2) is a rare syndrome of medullary thyroid carcinoma (MTC) with pheochromocytoma and/or primary hyperparathyroidism (PHP), usually due to multigland hyperplasia. MEN 2 is associated with several RET protooncogene mutations. A 61-year-old woman with a family history of RET-positive MTC presented with a solitary thyroid nodule. Fine-needle aspiration biopsy was suspicious...

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