[Ultrasonographic study on primary hyperparathyroidism: evaluation of B-mode and color Doppler ultrasonography in localization].

Seventy six patients with primary hyperparathyroidism were studied systematically by B-mode ultrasonography (BUS) and color Doppler flow imaging (CDFI). The sensitivity to the patients was 72%, specificity 92%, accuracy 87%, positive predictive value 69%, and negative predictive value 92%. The diagnostic efficiency was the highest in the parathyroid adenomas in normal position. By comparing the diagnostic efficiency of BUS with CDFI, we found that the sensitivity was significantly different (P < 0.05) and the accuracy greatly significantly different (P < 0.01). The accuracy of CDFI was higher than that of BUS. We discussed the value of BUS in localization in the parathyroid lesions and discrimination between the various kinds of parathyroid lesions. In addition, ectopic parathyroid lesions, hyperparathyroid crisis, and comparison between various imaging examinations were also studied. It is suggested that the diagnostic level of BUS and CDFI in primary hyperparathyroidism be improved.