Retrosternal parathyroid adenomas manifesting in the form of a giant-cell "tumor" of the mandible.

The clinical features of primary hyperparathyroidism have been discussed. A case has been reported which presented many of the classic signs of the disease, including renal stones, duodenal ulcer, muscle weakness, and a swelling in the jaw. The problems of diagnosis and localization of adenoma have been discussed, and reference has been made to new diagnostic techniques using radiologic control and selective venous catheterization. The literature has been briefly reviewed and the importance of early diagnosis and treatment has been stressed.