[Intrathyroidal parathyroid adenoma and ectopic parathyroid gland in thyroid nodule - report of two cases].

Ectopic locations of parathyroid adenomas are a rare condition and can cause difficulty in their diagnosis and surgical treatment. We report two cases of intrathyroid parathyroid lesions. In the first patient, preoperative localization studies suggested the possibility of a parathyroid adenoma outside the thyroid gland. When a pathological gland is not found during surgery for primary hyperparathyroidism, an ectopic parathyroid gland was found in the thyroid tissue. In the second patient, in an existing thyroid nodule was found an ectopic normal parathyroid gland postoperatively.