Primary hyperparathyroidism due to water-clear cell carcinoma of the parathyroid gland: a case report and literature review

This case is particularly significant as it represents the largest water-clear cell carcinoma of the parathyroid gland reported in the literature to date. The patient was closely monitored postoperatively, and at 1-year follow-up, there were no signs of distant metastases or recurrence of hyperparathyroidism. This case underscores the aggressive nature of water-clear cell carcinoma, highlighting the need for early detection and prompt surgical intervention in such rare and potentially life-threatening tumors.