Routine measurement of serum calcitonin in nodular thyroid diseases allows the preoperative diagnosis of unsuspected sporadic medullary thyroid carcinoma [see comments]. - Pacini,F.; Fontanelli,M.; Fugazzola,L.; Elisei,R.; Romei,C.; Di Coscio,G.; Miccoli,P.; Pinchera,A. (J Clin Endocrinol Metab, 1994)