Abstract
A 56 yr old woman had hypercalcemia. Clinical symptoms and chest roentgenograms were suggestive of sarcoidosis. Results of laboratory studies were compatible with primary hyperparathyroidism. At surgical exploration of the neck, a parathyroid adenoma was found. Microscopically, sarcoid-like granulomas were present within the adenoma. The association between hypercalcemic sarcoidosis and primary hyperparathyroidism is reviewed, and the importance of this finding is discussed.