RESUMEN
UNLABELLED: THE AIM of this study is to evaluate the accuracy of scintigraphic preoperative localization of abnormal parathyroid gland. METHODS: 25 patients with confirmed hyperparathyroidism undergone scintigraphic and ultrasound localization prior to surgery. Paratthyroid scintigraphy was done with thallium - techetium substraction and technetium-tetrofosmin dual phase techniques. RESULTS: scintigraphic sensitivity and specificity was 83% and 100%. In primary hyperparathyroidism the sensitivity was 91% vs 75% in secondary one. Multinodular goiter affected sensitivity (72%). Ultrasound had an overall sensitivity of 66 % and a specificity of 100%. CONCLUSION: parathyroid scintigraphy is non invasive, accurate and costeffective in localizing abnormal parathyroid gland especialy adenoma.