Parathyroid adenoma, follicular variant: frozen section reporting

Abstract Parathyroid adenoma is a benign neoplasm of the parathyroid gland and the most common cause of primary hyperparathyroidism. It causes symptoms associated with hypercalcemia. Treatment is by surgical removal. A histopathologist is commonly involved in the reporting of parathyroid frozen sections with the aim to confirm the surgical excision of parathyroid tissue. This report highlights the diagnostic difficulty in the frozen section reporting of the follicular variant of the parathyroid adenoma which closely resembles thyroid tissue.