[Preoperative localization in primary hyperparathyroidism: value of Tc-99m-MIBI scintigraphy]

In order to assess the value of scanning with 99mTc-MIBI before surgery in primary hyperparathyroidism (PHP), we performed this procedure in 30 patients with PHP. MIBI imaging findings were: 24 true positive results, three false positive, three false negative (sensitivity: 89%). The 24 true positive results comprised 21 solitary adenomas (one of which was ectopic), one cancer, and two parathyroid hyperplasias. Thus 99mTc-MIBI scanning seems to be useful for the preoperative localization, and for preparing the surgeon to unusual features that could generate surgical failure.