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Medicina (Buenos Aires)
Print version ISSN 0025-7680On-line version ISSN 1669-9106
Abstract
SARLI, Marcelo; FRADINGER, Erich and ZANCHETTA, José. Hypocalciuric hypercalcemia due to de novo mutation of the calcium sensing receptor. Medicina (B. Aires) [online]. 2004, vol.64, n.4, pp.337-339. ISSN 0025-7680.
The aim of this paper is to refer the unusual case of a 34 years old woman who consulted because of asymptomatic hypercalcemia, detected in a biochemical routine examination. The elevated values of serum calcium without blunted parathyroid hormone secretion suggested a parathyroid pathology. The concomitance of hypocalciuria with hypercalcemia and a calcium clearance/creatinine clearance ratio less than 0.01 reverted the diagnosis of familial hypocalciuric hypercalcemia, the first option. The absence of familial background led to the molecular study of the patient and her family. The latter confirmed the diagnosis of a de novo inactivating mutation of the calcium sensing receptor. Details on the molecular study and a brief review of this subject are included.
Keywords : Familial hypocalciuric hypercalcemia; Calcium sensing receptor mutations.