When Thyroid and Parathyroid Collide

Pathologists report the first case of papillary thyroid carcinoma invading an intrathyroidal parathyroid adenoma

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A rare case of intrathyroidal parathyroid adenoma coexisting with papillary thyroid carcinoma was reported, highlighting diagnostic challenges.
2

This case is the first documented instance of papillary thyroid carcinoma invading an intrathyroidal parathyroid adenoma.
3

Intrathyroidal parathyroid adenomas account for less than 6% of primary hyperparathyroidism cases and can mimic benign thyroid nodules.
4

Fine-needle aspiration biopsy may misidentify parathyroid adenomas as thyroid lesions, complicating preoperative diagnosis.
5

Thorough histologic examination of thyroidectomy specimens is crucial, as parathyroid adenomas do not exclude concurrent thyroid malignancy.

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