Case Report

An Unusual Cause of Hypercalcemia

We describe a case of pronounced symptomatic hypercalcemia as a consequence of thyrotoxicosis alone. Primary hyperparathyroidism and other secondary causes of hypercalcemia were excluded. Hypercalcemia completely abated after treatment of thyrotoxicosis. Notwithstanding that hypercalcemia is an unusual manifestation of hyperthyroidism, asymptomatic elevation of serum calcium concentration had been documented in…